A 1 7 10 22 3 2 26 4 2 2 7 8 11 2 9 13 12 9 2 4 1 12 B 5 1 2 1 1 1 1 2 2 1 3 1 C 6 1 1 14 2 11 11 3 2 3 1 1 1 1 D 6 12 30 1 2 4 30 1 4 1 1 1 1 3 E 11 14 16 12 2 6 33 10 2 6 18 14 12 1 7 36 11 12 2 16 5 1 1 F 3 2 8 2 1 2 2 1 3 25 3 1 1 1 G 4 1 3 2 11 2 3 1 H 1 11 2 4 1 4 1 2 1 1 2 10 50 3 2 I 2 1 4 12 6 5 1 12 1 5 9 8 12 1 3 12 13 22 2 3 6 1 1 J 1 K 1 1 2 2 1 1 L 14 6 2 1 6 1 1 1 6 9 3 6 3 3 2 3 5 M 7 3 13 2 2 3 4 1 10 4 1 1 2 N 38 3 25 2 1 31 3 2 2 39 4 3 11 2 O 1 1 12 4 8 8 3 12 18 2 4 7 8 3 7 13 15 22 2 6 1 5 P 2 1 8 1 2 4 2 3 2 1 8 1 4 3 1 Q 2 1 1 1 R 16 1 3 3 40 3 6 2 6 1 2 1 25 8 2 2 8 11 2 S 16 1 3 25 1 2 17 1 2 1 12 7 2 9 11 6 11 1 6 T 25 1 3 12 13 5 2 3 20 2 1 24 8 2 16 20 11 6 2 2 7 U 1 2 1 6 1 3 2 2 3 3 1 17 1 5 3 5 5 1 V 3 1 5 5 3 2 5 1 W 1 2 8 1 1 1 1 2 4 2 3 3 X 1 4 2 1 1 Y 3 2 2 4 1 1 8 1 2 1 3 1 7 Z 1 1 1 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Table IV.--Order of frequency of common pairs to be expected in a count of 2,000 letters of military or semi-military English text. (Based on a count of 20,000 letters).