a-a a-c aaa aac aad aah aao aap ac- aca acc acd ach aco acp ad- ada adc add adh ado adp aha ahc ahd ahh aho ahp aoa aoc aod aoh aoo aop ap- apa apc apd aph apo app c-- caa cac cad cah cao cap cca ccc ccd cch cco ccp cda cdc cdd cdh cdo cdp ch- cha chc chd chh cho chp co- coa coc cod coh coo cop cpa cpc cpd cph cpo cpp daa dac dad dah dao dap dca dcc dcd dco dcp dda ddc ddd ddh ddo ddp dh- dha dhc dhd dhh dho dhp doa doc dod doh doo dop dpa dpc dpd dph dpo dpp haa hac had hah hao hap hca hcc hcd hch hco hcp hda hdc hdd hdh hdo hdp hha hhc hhd hhh hho hhp hoa hoc hod hoh hoo hop hpa hpc hpd hph hpo hpp oaa oac oad oah oao oap oc- oca occ ocd och oco ocp oda odc odd odh odo odp oha ohc ohd ohh oho ohp oo- ooa ooc ood ooh ooo oop op- opa opc opd oph opo opp p-p paa pac pad pah pao pap pca pcc pcd pch pco pcp pda pdc pdd pdh pdo pdp pha phc phd pho php poa poc pod poh poo pop ppa ppc ppd pph ppo ppp