a-a a-c aaa aac aad aae aah aao ac- aca acc acd ace ach aco ad- ada adc add ade adh ado aea aec aed aee aeh aeo aha ahc ahd ahe ahh aho aoa aoc aod aoe aoh aoo c-- caa cac cad cae cah cao cca ccc ccd cce cch cco cda cdc cdd cde cdh cdo ce- cea cec ced cee ceh ceo ch- cha chc chd che chh cho co- coa coc cod coe coh coo daa dac dad dae dah dao dca dcc dcd dce dco dda ddc ddd dde ddh ddo de- dea dec ded dee deh deo dh- dha dhc dhd dhe dhh dho doa doc dod doe doh doo eaa eac ead eae eah eao ec- eca ecc ecd ece ech eco ed- eda edc edd ede edh edo eea eec eed eee eeo eha ehc ehd ehe ehh eho eo- eoa eoc eod eoe eoh eoo haa hac had hae hah hao hca hcc hcd hce hch hco hda hdc hdd hde hdh hdo he- hea hec hed hee heh heo hha hhc hhd hhe hhh hho hoa hoc hod hoe hoh hoo oaa oac oad oae oah oao oc- oca occ ocd och oco oda odc odd ode odh odo oea oec oed oee oeh oeo oha ohc ohd ohe ohh oho oo- ooa ooc ood ooh ooo