a-a a-t aaa aak aao aap aar aas aat aka akk ako akp akr aks aoa aok aoo aop aor aos aot ap- apa apk apo app apr aps apt ar- ara ark aro arp arr ars art as- asa ask aso asp asr ass ast at- ata ato atp atr ats att k-t ka- kaa kak kao kap kar kas kat kkk kkp kkr kks kkt koa kok koo kop kor kos kot kpa kpk kpo kpp kpr kps kpt kra krk kro krp krr krs krt ksa ksk kso ksp ksr kss kst kta ktk kto ktp ktr kts ktt oaa oak oao oap oar oas oat oka okk oko okp okr oks oo- ooa ook ooo oop oor oos oot op- opa opk opo opp opr ops opt or- ora ork oro orp orr ors ort os- osa osk oso osp osr oss ost ot- ota otk oto otp otr ots ott p-p paa pak pao pap par pas pat pka pko pkp pkr pks pkt poa pok poo pop por pos pot ppa ppk ppo ppp ppr pps ppt pra prk pro prp prr prs prt ps- psa psk pso psp psr pss pst pt- pta ptk pto ptp ptr pts ptt ra- raa rak rao rap rar ras rat rkk rko rkp rks rkt roa rok roo rop ror ros rot rpa rpk rpo rpp rpr rps rpt rra rrk rrp rrr rrs rrt rsa rsk rso rsp rsr rss rst rta rtk rto rtp rtr rts rtt saa sak sao sap sar sas sat sk- ska skk sko skp skr sks skt soa sok soo sop sor sos sot spa spk spo spp spr sps spt sr- sra srk sro srp srr srs srt ss- ssa ssk sso ssp ssr sss sst sta stk sto stp str sts stt taa tak tao tap tar tas tat tka tkk tko tkp tkr tks tkt to- toa tok too top tor tos tot tpa tpk tpo tpp tpr tps tpt tra trk tro trp trr trs trt tsa tsk tso tsp tsr tss tst tta ttk tto ttp ttr tts ttt