a-a a-c a-t aaa aac aak aap aar aat ac- aca acc ack acp acr act aka akc akk akp akr ap- apa apc apk app apr apt ar- ara arc ark arp arr art at- ata atc atp atr att c-- caa cac cak cap car cat cca ccc cck ccp ccr cct cka ckc ckt cpa cpc cpk cpp cpr cpt cra crc crk crp crr crt cta ctc ctk ctp ctr ctt k-t ka- kaa kac kak kap kar kat kca kcc kck kcp kcr kct kkc kkk kkp kkr kkt kpa kpc kpk kpp kpr kpt kra krc krk krp krr krt kta ktc ktk ktp ktr ktt p-p paa pac pak pap par pat pca pcc pck pcp pcr pct pka pkc pkp pkr pkt ppa ppc ppk ppp ppr ppt pra prc prk prp prr prt pt- pta ptc ptk ptp ptr ptt ra- raa rac rak rap rar rat rca rcc rcp rcr rct rkc rkk rkp rkt rpa rpc rpk rpp rpr rpt rra rrc rrk rrp rrr rrt rta rtc rtk rtp rtr rtt taa tac tak tap tar tat tca tcc tck tcp tcr tct tka tkc tkk tkp tkr tkt tpa tpc tpk tpp tpr tpt tra trc trk trp trr trt tta ttc ttk ttp ttr ttt