| a |
The whole sentence is written backwards. Plaintext is "WELCOME TO OUR PUZZLE PAGES". |
| b |
The sentence is split into groups of three letters then each group is written backwards. Plaintext is "THE
SPY IS WEARING A BLUE COAT". |
| c |
The sentence is split in half, then the letters in the second half are written in between the letters of the first half. Plaintext
is "YOU HAVE CRACKED THIS CODE". |
| d |
The sentence is split into groups of four letters and a dummy letter inserted in the middle of each group. Plaintext is "WE
WILL ATTACK AT SUNSET". |
| e |
The sentence is split into groups of three letters (including a couple of dummy letters at the end), and the groups of letters
are mixed up (in this case the permutation is 12345678 >
36827514). Plaintext is "THIS MESSAGE IS TOP SECRET". |
| f |
The sentence is split into groups of four letters (including a dummy letter at the end), and the middle two letters in each
group are swapped round. Plaintext is "NOW YOU CAN MAKE UP YOUR OWN CODES". |
