a-a a-c a-t aaa aac aak aap aat aax ac- aca acc ack acp act acx aka akc akk akp ap- apa apc apk app apt apx at- ata atc atp att atx ax- axa axk axp axt axx c-- caa cac cak cap cat cax cca ccc cck ccp cct ccx cka ckc ckt ckx cpa cpc cpk cpp cpt cpx cta ctc ctk ctp ctt ctx cxc cxk cxp cxt cxx k-t ka- kaa kac kak kap kat kax kca kcc kck kcp kct kcx kkc kkk kkp kkt kpa kpc kpk kpp kpt kta ktc ktk ktp ktt p-p paa pac pak pap pat pax pca pcc pck pcp pct pcx pka pkc pkp pkt ppa ppc ppk ppp ppt ppx pt- pta ptc ptk ptp ptt ptx pxc pxk pxt t-x taa tac tak tap tat tax tca tcc tck tcp tct tcx tka tkc tkk tkp tkt tpa tpc tpk tpp tpt tpx tta ttc ttk ttp ttt ttx txk txt xaa xac xak xap xat xcp xcx xpa xpc xpp xpt xtc xtp xtx xxp xxx