ผมจะวนไปเรื่อยจนครบ 20 ตัว โดยอักษรต้องเรียงกันครับ และไม่ซ้ำกันตัวอย่าง
1 ตัว
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
ตัวอย่าง 2 ตัว
B C
B D
B E
B F
B G
B H
B I
B J
B K
B L
B M
B N
B O
B P
B Q
B R
B S
B T
B U
C D
C E
C F
C G
C H
C I
C J
C K
C L
C M
C N
C O
C P
C Q
C R
C S
C T
C U
D E
D F
D G
D H
D I
D J
D K
D L
D M
D N
D O
D P
D Q
D R
D S
D T
D U
E F
E G
E H
E I
E J
E K
E L
E M
E N
E O
E P
E Q
E R
E S
E T
E U
F G
F H
F I
F J
F K
F L
F M
F N
F O
F P
F Q
F R
F S
F T
F U
G H
G I
G J
G K
G L
G M
G N
G O
G P
G Q
G R
G S
G T
G U
H I
H J
H K
H L
H M
H N
H O
H P
H Q
H R
H S
H T
H U
I J
I K
I L
I M
I N
I O
I P
I Q
I R
I S
I T
I U
J K
J L
J M
J N
J O
J P
J Q
J R
J S
J T
J U
K L
K M
K N
K O
K P
K Q
K R
K S
K T
K U
L M
L N
L O
L P
L Q
L R
L S
L T
L U
M N
M O
M P
M Q
M R
M S
M T
M U
N O
N P
N Q
N R
N S
N T
N U
O P
O Q
O R
O S
O T
O U
P Q
P R
P S
P T
P U
Q R
Q S
Q T
Q U
R S
R T
R U
S T
T U
ตัวอย่าง 3 ตัว
B C D
B C E
B C F
B C G
B C H
B C I
B C J
B C K
B C L
B C M
B C N
B C O
B C P
B C Q
B C R
B C S
B C T
B C U
B D E
B D F
B D G
B D H
B D I
B D J
B D K
B D L
B D M
B D N
B D O
B D P
B D Q
B D R
B D S
B D T
B D U
B E F
B E G
B E H
B E I
B E J
B E K
B E L
B E M
B E N
B E O
B E P
B E Q
B E R
B E S
B E T
B E U
B F G
B F H
B F I
B F J
B F K
B F L
B F M
B F N
B F O
B F P
B F Q
B F R
B F S
B F T
B F U
B G H
B G I
B G J
B G K
B G L
B G M
B G N
B G O
B G P
B G Q
B G R
B G S
B G T
B G U
B H I
B H J
B H K
B H L
B H M
B H N
B H O
B H P
B H Q
B H R
B H S
B H T
B H U
B I J
B I K
B I L
B I M
B I N
B I O
B I P
B I Q
B I R
B I S
B I T
B I U
B J K
B J L
B J M
B J N
B J O
B J P
B J Q
B J R
B J S
B J T
B J U
B K L
B K M
B K N
B K O
B K P
B K Q
B K R
B K S
B K T
B K U
B L M
B L N
B L O
B L P
B L Q
B L R
B L S
B L T
B L U
B M N
B M O
B M P
B M Q
B M R
B M S
B M T
B M U
B N O
B N P
B N Q
B N R
B N S
B N T
B N U
B O P
B O Q
B O R
B O S
B O T
B O U
B P Q
B P R
B P S
B P T
B P U
B Q R
B Q S
B Q T
B Q U
B R S
B R T
B R U
B S T
B T U
C D E
C D F
C D G
C D H
C D I
C D J
C D K
C D L
C D M
C D N
C D O
C D P
C D Q
C D R
C D S
C D T
C D U
C E F
C E G
C E H
C E I
C E J
C E K
C E L
C E M
C E N
C E O
C E P
C E Q
C E R
C E S
C E T
C E U
C F G
C F H
C F I
C F J
C F K
C F L
C F M
C F N
C F O
C F P
C F Q
C F R
C F S
C F T
C F U
C G H
C G I
C G J
C G K
C G L
C G M
C G N
C G O
C G P
C G Q
C G R
C G S
C G T
C G U
C H I
C H J
C H K
C H L
C H M
C H N
C H O
C H P
C H Q
C H R
C H S
C H T
C H U
C I J
C I K
C I L
C I M
C I N
C I O
C I P
C I Q
C I R
C I S
C I T
C I U
C J K
C J L
C J M
C J N
C J O
C J P
C J Q
C J R
C J S
C J T
C J U
C K L
C K M
C K N
C K O
C K P
C K Q
C K R
C K S
C K T
C K U
C L M
C L N
C L O
C L P
C L Q
C L R
C L S
C L T
C L U
C M N
C M O
C M P
C M Q
C M R
C M S
C M T
C M U
C N O
C N P
C N Q
C N R
C N S
C N T
C N U
C O P
C O Q
C O R
C O S
C O T
C O U
C P Q
C P R
C P S
C P T
C P U
C Q R
C Q S
C Q T
C Q U
C R S
C R T
C R U
C S T
C T U
D E F
D E G
D E H
D E I
D E J
D E K
D E L
D E M
D E N
D E O
D E P
D E Q
D E R
D E S
D E T
D E U
D F G
D F H
D F I
D F J
D F K
D F L
D F M
D F N
D F O
D F P
D F Q
D F R
D F S
D F T
D F U
D G H
D G I
D G J
D G K
D G L
D G M
D G N
D G O
D G P
D G Q
D G R
D G S
D G T
D G U
D H I
D H J
D H K
D H L
D H M
D H N
D H O
D H P
D H Q
D H R
D H S
D H T
D H U
D I J
D I K
D I L
D I M
D I N
D I O
D I P
D I Q
D I R
D I S
D I T
D I U
D J K
D J L
D J M
D J N
D J O
D J P
D J Q
D J R
D J S
D J T
D J U
D K L
D K M
D K N
D K O
D K P
D K Q
D K R
D K S
D K T
D K U
D L M
D L N
D L O
D L P
D L Q
D L R
D L S
D L T
D L U
D M N
D M O
D M P
D M Q
D M R
D M S
D M T
D M U
D N O
D N P
D N Q
D N R
D N S
D N T
D N U
D O P
D O Q
D O R
D O S
D O T
D O U
D P Q
D P R
D P S
D P T
D P U
D Q R
D Q S
D Q T
D Q U
D R S
D R T
D R U
D S T
D T U
E F G
E F H
E F I
E F J
E F K
E F L
E F M
E F N
E F O
E F P
E F Q
E F R
E F S
E F T
E F U
E G H
E G I
E G J
E G K
E G L
E G M
E G N
E G O
E G P
E G Q
E G R
E G S
E G T
E G U
E H I
E H J
E H K
E H L
E H M
E H N
E H O
E H P
E H Q
E H R
E H S
E H T
E H U
E I J
E I K
E I L
E I M
E I N
E I O
E I P
E I Q
E I R
E I S
E I T
E I U
E J K
E J L
E J M
E J N
E J O
E J P
E J Q
E J R
E J S
E J T
E J U
E K L
E K M
E K N
E K O
E K P
E K Q
E K R
E K S
E K T
E K U
E L M
E L N
E L O
E L P
E L Q
E L R
E L S
E L T
E L U
E M N
E M O
E M P
E M Q
E M R
E M S
E M T
E M U
E N O
E N P
E N Q
E N R
E N S
E N T
E N U
E O P
E O Q
E O R
E O S
E O T
E O U
E P Q
E P R
E P S
E P T
E P U
E Q R
E Q S
E Q T
E Q U
E R S
E R T
E R U
E S T
E T U
F G H
F G I
F G J
F G K
F G L
F G M
F G N
F G O
F G P
F G Q
F G R
F G S
F G T
F G U
F H I
F H J
F H K
F H L
F H M
F H N
F H O
F H P
F H Q
F H R
F H S
F H T
F H U
F I J
F I K
F I L
F I M
F I N
F I O
F I P
F I Q
F I R
F I S
F I T
F I U
F J K
F J L
F J M
F J N
F J O
F J P
F J Q
F J R
F J S
F J T
F J U
F K L
F K M
F K N
F K O
F K P
F K Q
F K R
F K S
F K T
F K U
F L M
F L N
F L O
F L P
F L Q
F L R
F L S
F L T
F L U
F M N
F M O
F M P
F M Q
F M R
F M S
F M T
F M U
F N O
F N P
F N Q
F N R
F N S
F N T
F N U
F O P
F O Q
F O R
F O S
F O T
F O U
F P Q
F P R
F P S
F P T
F P U
F Q R
F Q S
F Q T
F Q U
F R S
F R T
F R U
F S T
F T U
G H I
G H J
G H K
G H L
G H M
G H N
G H O
G H P
G H Q
G H R
G H S
G H T
G H U
G I J
G I K
G I L
G I M
G I N
G I O
G I P
G I Q
G I R
G I S
G I T
G I U
G J K
G J L
G J M
G J N
G J O
G J P
G J Q
G J R
G J S
G J T
G J U
G K L
G K M
G K N
G K O
G K P
G K Q
G K R
G K S
G K T
G K U
G L M
G L N
G L O
G L P
G L Q
G L R
G L S
G L T
G L U
G M N
G M O
G M P
G M Q
G M R
G M S
G M T
G M U
G N O
G N P
G N Q
G N R
G N S
G N T
G N U
G O P
G O Q
G O R
G O S
G O T
G O U
G P Q
G P R
G P S
G P T
G P U
G Q R
G Q S
G Q T
G Q U
G R S
G R T
G R U
G S T
G T U
H I J
H I K
H I L
H I M
H I N
H I O
H I P
H I Q
H I R
H I S
H I T
H I U
H J K
H J L
H J M
H J N
H J O
H J P
H J Q
H J R
H J S
H J T
H J U
H K L
H K M
H K N
H K O
H K P
H K Q
H K R
H K S
H K T
H K U
H L M
H L N
H L O
H L P
H L Q
H L R
H L S
H L T
H L U
H M N
H M O
H M P
H M Q
H M R
H M S
H M T
H M U
H N O
H N P
H N Q
H N R
H N S
H N T
H N U
H O P
H O Q
H O R
H O S
H O T
H O U
H P Q
H P R
H P S
H P T
H P U
H Q R
H Q S
H Q T
H Q U
H R S
H R T
H R U
H S T
H T U
I J K
I J L
I J M
I J N
I J O
I J P
I J Q
I J R
I J S
I J T
I J U
I K L
I K M
I K N
I K O
I K P
I K Q
I K R
I K S
I K T
I K U
I L M
I L N
I L O
I L P
I L Q
I L R
I L S
I L T
I L U
I M N
I M O
I M P
I M Q
I M R
I M S
I M T
I M U
I N O
I N P
I N Q
I N R
I N S
I N T
I N U
I O P
I O Q
I O R
I O S
I O T
I O U
I P Q
I P R
I P S
I P T
I P U
I Q R
I Q S
I Q T
I Q U
I R S
I R T
I R U
I S T
I T U
J K L
J K M
J K N
J K O
J K P
J K Q
J K R
J K S
J K T
J K U
J L M
J L N
J L O
J L P
J L Q
J L R
J L S
J L T
J L U
J M N
J M O
J M P
J M Q
J M R
J M S
J M T
J M U
J N O
J N P
J N Q
J N R
J N S
J N T
J N U
J O P
J O Q
J O R
J O S
J O T
J O U
J P Q
J P R
J P S
J P T
J P U
J Q R
J Q S
J Q T
J Q U
J R S
J R T
J R U
J S T
J T U
K L M
K L N
K L O
K L P
K L Q
K L R
K L S
K L T
K L U
K M N
K M O
K M P
K M Q
K M R
K M S
K M T
K M U
K N O
K N P
K N Q
K N R
K N S
K N T
K N U
K O P
K O Q
K O R
K O S
K O T
K O U
K P Q
K P R
K P S
K P T
K P U
K Q R
K Q S
K Q T
K Q U
K R S
K R T
K R U
K S T
K T U
L M N
L M O
L M P
L M Q
L M R
L M S
L M T
L M U
L N O
L N P
L N Q
L N R
L N S
L N T
L N U
L O P
L O Q
L O R
L O S
L O T
L O U
L P Q
L P R
L P S
L P T
L P U
L Q R
L Q S
L Q T
L Q U
L R S
L R T
L R U
L S T
L T U
M N O
M N P
M N Q
M N R
M N S
M N T
M N U
M O P
M O Q
M O R
M O S
M O T
M O U
M P Q
M P R
M P S
M P T
M P U
M Q R
M Q S
M Q T
M Q U
M R S
M R T
M R U
M S T
M T U
N O P
N O Q
N O R
N O S
N O T
N O U
N P Q
N P R
N P S
N P T
N P U
N Q R
N Q S
N Q T
N Q U
N R S
N R T
N R U
N S T
N T U
O P Q
O P R
O P S
O P T
O P U
O Q R
O Q S
O Q T
O Q U
O R S
O R T
O R U
O S T
O T U
P Q R
P Q S
P Q T
P Q U
P R S
P R T
P R U
P S T
P T U
Q R S
Q R T
Q R U
R S T
R T U
S T U
และ
4្ตัว
5 ตัว
......
......
ไปเริ่อยๆจนครบ 20 ตัวจะได้
BCDEFFGHIJKLMNOPQRSTU
แบบนี้ครับ ท่านใดเขียนให้ โปรดติดต่อ 0909525362 ลีโอครับ