| pk1 | pk2 | pk3 | content |
|---|---|---|---|
| a | h | s | a-h-s |
| a | h | t | a-h-t |
| a | h | u | a-h-u |
| a | h | v | a-h-v |
| a | h | w | a-h-w |
| a | h | x | a-h-x |
| a | h | y | a-h-y |
| a | h | z | a-h-z |
| b | h | a | b-h-a |
| b | h | b | b-h-b |
| b | h | c | b-h-c |
| b | h | d | b-h-d |
| b | h | e | b-h-e |
| b | h | f | b-h-f |
| b | h | g | b-h-g |
| b | h | h | b-h-h |
| b | h | i | b-h-i |
| b | h | j | b-h-j |
| b | h | k | b-h-k |
| b | h | l | b-h-l |
| b | h | m | b-h-m |
| b | h | n | b-h-n |
| b | h | o | b-h-o |
| b | h | p | b-h-p |
| b | h | q | b-h-q |
| b | h | r | b-h-r |
| b | h | s | b-h-s |
| b | h | t | b-h-t |
| b | h | u | b-h-u |
| b | h | v | b-h-v |
| b | h | w | b-h-w |
| b | h | x | b-h-x |
| b | h | y | b-h-y |
| b | h | z | b-h-z |