a-a a-c aaa aac aaf aah aak aao aap aar ac- aca acc acf ach ack aco acp acr af- afa afc aff afh afk afo afp afr aha ahc ahf ahh ahk aho ahp ahr aka akc akh akk ako akp akr aoa aoc aof aoh aok aoo aop aor ap- apa apc apf aph apk apo app apr ar- ara arc arf arh ark aro arp arr c-- caa cac caf cah cak cao cap car cca ccc ccf cch cck cco ccp ccr cfa cfc cff cfh cfk cfo cfp cfr ch- cha chc chf chh chk cho chp chr cka ckc ckh cko co- coa coc cof coh cok coo cop cor cpa cpc cpf cph cpk cpo cpp cpr cra crc crf crh crk cro crp crr faa fac faf fah fak fao fap far fca fcc fcf fck fco fcp fcr ffa ffc fff ffh ffk ffo ffp ffr fha fhc fhf fhh fho fhp fhr fka fkc fkf fkk fkp foa foc fof foh fok foo fop for fpa fpc fph fpk fpo fpp fpr fra frc frf frh frk fro frp frr haa hac haf hah hak hao hap har hca hcc hcf hch hck hco hcp hcr hfa hfc hff hfh hfk hfo hfp hfr hha hhc hhf hhh hhk hho hhp hhr hka hkf hkh hkk hko hkp hkr hoa hoc hof hoh hok hoo hop hor hpa hpc hpf hph hpk hpo hpp hpr hr- hra hrc hrf hrh hrk hro hrp hrr ka- kaa kac kaf kah kak kao kap kar kca kcc kch kck kcp kcr kfa kfc kff kfh kfo kha khf khh khk kho khr kkc kkh kkk kkp kkr koa koc kof koh kok koo kop kor kpa kpc kpf kph kpk kpo kpp kpr kra krc krf krk kro krp krr oaa oac oaf oah oak oao oap oar oc- oca occ ocf och ock oco ocp ocr of- ofa ofc off ofo ofp ofr oha ohc ohf ohh oho ohp ohr oka okc okk oko okp okr oo- ooa ooc oof ooh ook ooo oop oor op- opa opc opf oph opk opo opp opr or- ora orc orf orh ork oro orp orr p-p paa pac paf pah pak pao pap par pca pcc pcf pch pck pco pcp pcr pfa pfc pff pfk pfo pfp pfr pha phc phf phk pho php phr pka pkc pkf pko pkp pkr poa poc pof poh pok poo pop por ppa ppc ppf pph ppk ppo ppp ppr pra prc prf prh prk pro prp prr ra- raa rac raf rah rak rao rap rar rca rcc rcf rch rco rcp rcr rfa rfc rff rfh rfk rfo rfp rfr rh- rha rhc rhf rhh rho rhp rhr rkc rkf rkk rko rkp roa roc rof roh rok roo rop ror rpa rpc rpf rph rpk rpo rpp rpr rra rrc rrf rrh rrk rrp rrr