a-a a-c aaa aac aad aae aah aao aap ac- aca acc acd ace ach aco acp ad- ada adc add ade adh ado adp aea aec aed aee aeh aeo aep aha ahc ahd ahe ahh aho ahp aoa aoc aod aoe aoh aoo aop ap- apa apc apd ape aph apo app c-- caa cac cad cae cah cao cap cca ccc ccd cce cch cco ccp cda cdc cdd cde cdh cdo cdp ce- cea cec ced cee ceh ceo cep ch- cha chc chd che chh cho chp co- coa coc cod coe coh coo cop cpa cpc cpd cpe cph cpo cpp daa dac dad dae dah dao dap dca dcc dcd dce dco dcp dda ddc ddd dde ddh ddo ddp de- dea dec ded dee deh deo dep dh- dha dhc dhd dhe dhh dho dhp doa doc dod doe doh doo dop dpa dpc dpd dpe dph dpo dpp eaa eac ead eae eah eao eap ec- eca ecc ecd ece ech eco ed- eda edc edd ede edh edo edp eea eec eed eee eeo eep eha ehc ehd ehe ehh eho ehp eo- eoa eoc eod eoe eoh eoo eop ep- epa epc epd epe eph epo epp haa hac had hae hah hao hap hca hcc hcd hce hch hco hcp hda hdc hdd hde hdh hdo hdp he- hea hec hed hee heh heo hep hha hhc hhd hhe hhh hho hhp hoa hoc hod hoe hoh hoo hop hpa hpc hpd hpe hph hpo hpp oaa oac oad oae oah oao oap oc- oca occ ocd och oco ocp oda odc odd ode odh odo odp oea oec oed oee oeh oeo oep oha ohc ohd ohe ohh oho ohp oo- ooa ooc ood ooh ooo oop op- opa opc opd ope oph opo opp p-p paa pac pad pae pah pao pap pca pcc pcd pce pch pco pcp pda pdc pdd pde pdh pdo pdp pea pec ped pee peh peo pep pha phc phd phe pho php poa poc pod poe poh poo pop ppa ppc ppd ppe pph ppo ppp