a-a a-c a-t aaa aac aak aap aar aas aat ac- aca acc ack acp acr acs act aka akc akk akp akr aks ap- apa apc apk app apr aps apt ar- ara arc ark arp arr ars art as- asa asc ask asp asr ass ast at- ata atc atp atr ats att c-- caa cac cak cap car cas cat cca ccc cck ccp ccr ccs cct cka ckc cks ckt cpa cpc cpk cpp cpr cps cpt cra crc crk crp crr crs crt csa csc csk csp csr css cst cta ctc ctk ctp ctr cts ctt k-t ka- kaa kac kak kap kar kas kat kca kcc kck kcp kcr kcs kct kkc kkk kkp kkr kks kkt kpa kpc kpk kpp kpr kps kpt kra krc krk krp krr krs krt ksa ksc ksk ksp ksr kss kst kta ktc ktk ktp ktr kts ktt p-p paa pac pak pap par pas pat pca pcc pck pcp pcr pcs pct pka pkc pkp pkr pks pkt ppa ppc ppk ppp ppr pps ppt pra prc prk prp prr prs prt ps- psa psc psk psp psr pss pst pt- pta ptc ptk ptp ptr pts ptt ra- raa rac rak rap rar ras rat rca rcc rcp rcr rcs rct rkc rkk rkp rks rkt rpa rpc rpk rpp rpr rps rpt rra rrc rrk rrp rrr rrs rrt rsa rsc rsk rsp rsr rss rst rta rtc rtk rtp rtr rts rtt saa sac sak sap sar sas sat sca scc sck scp scr scs sct sk- ska skc skk skp skr sks skt spa spc spk spp spr sps spt sr- sra src srk srp srr srs srt ss- ssa ssc ssk ssp ssr sss sst sta stc stk stp str sts stt taa tac tak tap tar tas tat tca tcc tck tcp tcr tcs tct tka tkc tkk tkp tkr tks tkt tpa tpc tpk tpp tpr tps tpt tra trc trk trp trr trs trt tsa tsc tsk tsp tsr tss tst tta ttc ttk ttp ttr tts ttt