a-a a-c a-t aaa aac aae aak aap aat ac- aca acc ace ack acp act aea aec aee aek aep aet aka akc ake akk akp ap- apa apc ape apk app apt at- ata atc ate atp att c-- caa cac cae cak cap cat cca ccc cce cck ccp cct ce- cea cec cee cek cep cet cka ckc ckt cpa cpc cpe cpk cpp cpt cta ctc cte ctk ctp ctt eaa eac eae eak eap eat ec- eca ecc ece eck ect eea eec eee eek eep eet eka ekc eke ekp ekt ep- epa epc epe epp ept eta etc ete etk etp ett k-t ka- kaa kac kae kak kap kat kca kcc kce kck kcp kct ke- kea kec kee kek kep ket kkc kke kkk kkp kkt kpa kpc kpe kpk kpp kpt kta ktc kte ktk ktp ktt p-p paa pac pae pak pap pat pca pcc pce pck pcp pct pea pec pee pek pep pet pka pkc pke pkp pkt ppa ppc ppe ppk ppp ppt pt- pta ptc pte ptk ptp ptt taa tac tae tak tap tat tca tcc tce tck tcp tct te- tea tec tee tek tep tet tka tkc tke tkk tkp tkt tpa tpc tpe tpk tpp tpt tta ttc tte ttk ttp ttt