a-a a-c aaa aac aak aam aao aap aar aas ac- aca acc ack acm aco acp acr acs aka akc akk akm ako akp akr aks ama amc amk amm amo amp amr ams aoa aoc aok aom aoo aop aor aos ap- apa apc apk apm apo app apr aps ar- ara arc ark arm aro arp arr ars as- asa asc ask asm aso asp asr ass c-- caa cac cak cam cao cap car cas cca ccc cck ccm cco ccp ccr ccs cka ckc ckm cko cks cma cmc cmk cmm cmo cmp cmr cms co- coa coc cok com coo cop cor cos cpa cpc cpk cpm cpo cpp cpr cps cra crc crk crm cro crp crr crs csa csc csk csm cso csp csr css ka- kaa kac kak kam kao kap kar kas kca kcc kck kcm kcp kcr kcs kkc kkk kkm kkp kkr kks kma kmc kmk kmm kmo kmp kms koa koc kok kom koo kop kor kos kpa kpc kpk kpm kpo kpp kpr kps kra krc krk kro krp krr krs ksa ksc ksk ksm kso ksp ksr kss m-o m-r maa mac mak mam mao map mar mas mc- mca mcc mck mcm mco mcp mcr mcs mka mkc mkk mkm mko mkp mkr mks mma mmc mmk mmm mmo mmp mmr mms moa moc mok mom moo mop mor mos mpa mpc mpk mpm mpo mpp mpr mps mra mrc mrk mrm mro mrp mrr mrs msa msc msk msm mso msp msr mss oaa oac oak oam oao oap oar oas oc- oca occ ock ocm oco ocp ocr ocs oka okc okk oko okp okr oks om- oma omc omm omo omp omr oms oo- ooa ooc ook oom ooo oop oor oos op- opa opc opk opm opo opp opr ops or- ora orc ork orm oro orp orr ors os- osa osc osk osm oso osp osr oss p-p paa pac pak pam pao pap par pas pca pcc pck pcm pco pcp pcr pcs pka pkc pkm pko pkp pkr pks pma pmc pmk pmm pmo pmp pmr pms poa poc pok pom poo pop por pos ppa ppc ppk ppm ppo ppp ppr pps pra prc prk prm pro prp prr prs ps- psa psc psk psm pso psp psr pss ra- raa rac rak ram rao rap rar ras rca rcc rcm rco rcp rcr rcs rkc rkk rkm rko rkp rks rma rmc rmm rmo rmp rmr rms roa roc rok rom roo rop ror ros rpa rpc rpk rpm rpo rpp rpr rps rra rrc rrk rrm rrp rrr rrs rsa rsc rsk rsm rso rsp rsr rss saa sac sak sam sao sap sar sas sca scc sck scm sco scp scr scs sk- ska skc skk skm sko skp skr sks sma smc smk smm smo smp smr sms soa soc sok som soo sop sor sos spa spc spk spm spo spp spr sps sr- sra src srk srm sro srp srr srs ss- ssa ssc ssk ssm sso ssp ssr sss