a-a a-c aaa aac aad aae aah aak ac- aca acc acd ace ach ack ad- ada adc add ade adh adk aea aec aed aee aeh aek aha ahc ahd ahe ahh ahk aka akc akd ake akh akk c-- caa cac cad cae cah cak cca ccc ccd cce cch cck cda cdc cdd cde cdh cdk ce- cea cec ced cee ceh cek ch- cha chc chd che chh chk cka ckc ckd ckh daa dac dad dae dah dak dca dcc dcd dce dck dda ddc ddd dde ddh ddk de- dea dec ded dee deh dek dh- dha dhc dhd dhe dhh dhk dka dkc dke dkk eaa eac ead eae eah eak ec- eca ecc ecd ece ech eck ed- eda edc edd ede edh edk eea eec eed eee eek eha ehc ehd ehe ehh eka ekc ekd eke ekh haa hac had hae hah hak hca hcc hcd hce hch hck hda hdc hdd hde hdh hdk he- hea hec hed hee heh hek hha hhc hhd hhe hhh hhk hka hkd hkh hkk ka- kaa kac kad kae kah kak kca kcc kcd kce kch kck kda kdc kde kdh kdk ke- kea kec ked kee keh kek kha khe khh khk kkc kke kkh kkk