a-a a-c aaa aac aak aam aao aap aar ac- aca acc ack acm aco acp acr aka akc akk akm ako akp akr ama amc amk amm amo amp amr aoa aoc aok aom aoo aop aor ap- apa apc apk apm apo app apr ar- ara arc ark arm aro arp arr c-- caa cac cak cam cao cap car cca ccc cck ccm cco ccp ccr cka ckc ckm cko cma cmc cmk cmm cmo cmp cmr co- coa coc cok com coo cop cor cpa cpc cpk cpm cpo cpp cpr cra crc crk crm cro crp crr ka- kaa kac kak kam kao kap kar kca kcc kck kcm kcp kcr kkc kkk kkm kkp kkr kma kmc kmk kmm kmo kmp koa koc kok kom koo kop kor kpa kpc kpk kpm kpo kpp kpr kra krc krk kro krp krr m-o m-r maa mac mak mam mao map mar mc- mca mcc mck mcm mco mcp mcr mka mkc mkk mkm mko mkp mkr mma mmc mmk mmm mmo mmp mmr moa moc mok mom moo mop mor mpa mpc mpk mpm mpo mpp mpr mra mrc mrk mrm mro mrp mrr oaa oac oak oam oao oap oar oc- oca occ ock ocm oco ocp ocr oka okc okk oko okp okr om- oma omc omm omo omp omr oo- ooa ooc ook oom ooo oop oor op- opa opc opk opm opo opp opr or- ora orc ork orm oro orp orr p-p paa pac pak pam pao pap par pca pcc pck pcm pco pcp pcr pka pkc pkm pko pkp pkr pma pmc pmk pmm pmo pmp pmr poa poc pok pom poo pop por ppa ppc ppk ppm ppo ppp ppr pra prc prk prm pro prp prr ra- raa rac rak ram rao rap rar rca rcc rcm rco rcp rcr rkc rkk rkm rko rkp rma rmc rmm rmo rmp rmr roa roc rok rom roo rop ror rpa rpc rpk rpm rpo rpp rpr rra rrc rrk rrm rrp rrr