a-a a-c a-t aaa aac aak aao aap aar aas aat ac- aca acc ack aco acp acr acs act aka akc akk ako akp akr aks aoa aoc aok aoo aop aor aos aot ap- apa apc apk apo app apr aps apt ar- ara arc ark aro arp arr ars art as- asa asc ask aso asp asr ass ast at- ata atc ato atp atr ats att c-- caa cac cak cao cap car cas cat cca ccc cck cco ccp ccr ccs cct cka ckc cko cks ckt co- coa coc cok coo cop cor cos cot cpa cpc cpk cpo cpp cpr cps cpt cra crc crk cro crp crr crs crt csa csc csk cso csp csr css cst cta ctc ctk cto ctp ctr cts ctt k-t ka- kaa kac kak kao kap kar kas kat kca kcc kck kcp kcr kcs kct kkc kkk kkp kkr kks kkt koa koc kok koo kop kor kos kot kpa kpc kpk kpo kpp kpr kps kpt kra krc krk kro krp krr krs krt ksa ksc ksk kso ksp ksr kss kst kta ktc ktk kto ktp ktr kts ktt oaa oac oak oao oap oar oas oat oc- oca occ ock oco ocp ocr ocs oct oka okc okk oko okp okr oks oo- ooa ooc ook ooo oop oor oos oot op- opa opc opk opo opp opr ops opt or- ora orc ork oro orp orr ors ort os- osa osc osk oso osp osr oss ost ot- ota otc otk oto otp otr ots ott p-p paa pac pak pao pap par pas pat pca pcc pck pco pcp pcr pcs pct pka pkc pko pkp pkr pks pkt poa poc pok poo pop por pos pot ppa ppc ppk ppo ppp ppr pps ppt pra prc prk pro prp prr prs prt ps- psa psc psk pso psp psr pss pst pt- pta ptc ptk pto ptp ptr pts ptt ra- raa rac rak rao rap rar ras rat rca rcc rco rcp rcr rcs rct rkc rkk rko rkp rks rkt roa roc rok roo rop ror ros rot rpa rpc rpk rpo rpp rpr rps rpt rra rrc rrk rrp rrr rrs rrt rsa rsc rsk rso rsp rsr rss rst rta rtc rtk rto rtp rtr rts rtt saa sac sak sao sap sar sas sat sca scc sck sco scp scr scs sct sk- ska skc skk sko skp skr sks skt soa soc sok soo sop sor sos sot spa spc spk spo spp spr sps spt sr- sra src srk sro srp srr srs srt ss- ssa ssc ssk sso ssp ssr sss sst sta stc stk sto stp str sts stt taa tac tak tao tap tar tas tat tca tcc tck tco tcp tcr tcs tct tka tkc tkk tko tkp tkr tks tkt to- toa toc tok too top tor tos tot tpa tpc tpk tpo tpp tpr tps tpt tra trc trk tro trp trr trs trt tsa tsc tsk tso tsp tsr tss tst tta ttc ttk tto ttp ttr tts ttt