a-a a-c aaa aac aad aae aah aak aao ac- aca acc acd ace ach ack aco ad- ada adc add ade adh adk ado aea aec aed aee aeh aek aeo aha ahc ahd ahe ahh ahk aho aka akc akd ake akh akk ako aoa aoc aod aoe aoh aok aoo c-- caa cac cad cae cah cak cao cca ccc ccd cce cch cck cco cda cdc cdd cde cdh cdk cdo ce- cea cec ced cee ceh cek ceo ch- cha chc chd che chh chk cho cka ckc ckd ckh cko co- coa coc cod coe coh cok coo daa dac dad dae dah dak dao dca dcc dcd dce dck dco dda ddc ddd dde ddh ddk ddo de- dea dec ded dee deh dek deo dh- dha dhc dhd dhe dhh dhk dho dka dkc dke dkk dko doa doc dod doe doh dok doo eaa eac ead eae eah eak eao ec- eca ecc ecd ece ech eck eco ed- eda edc edd ede edh edk edo eea eec eed eee eek eeo eha ehc ehd ehe ehh eho eka ekc ekd eke ekh eko eo- eoa eoc eod eoe eoh eok eoo haa hac had hae hah hak hao hca hcc hcd hce hch hck hco hda hdc hdd hde hdh hdk hdo he- hea hec hed hee heh hek heo hha hhc hhd hhe hhh hhk hho hka hkd hkh hkk hko hoa hoc hod hoe hoh hok hoo ka- kaa kac kad kae kah kak kao kca kcc kcd kce kch kck kda kdc kde kdh kdk kdo ke- kea kec ked kee keh kek keo kha khe khh khk kho kkc kke kkh kkk koa koc kod koe koh kok koo oaa oac oad oae oah oak oao oc- oca occ ocd och ock oco oda odc odd ode odh odo oea oec oed oee oeh oeo oha ohc ohd ohe ohh oho oka okc okd oke okk oko oo- ooa ooc ood ooh ook ooo