-ey a-a a-b a-c a-t aaa aab aac aae aak aap aat aay ab- aba abb abc abe abk abp abt aby ac- aca acb acc ace ack acp act acy aea aeb aec aee aek aep aet aey aka akb akc ake akk akp ap- apa apb apc ape apk app apt apy at- ata atb atc ate atp att ay- aya ayc aye ayk ayp ayt b-p baa bab bac bae bak bap bat bay bba bbb bbc bbe bbk bbp bbt bby bca bcb bcc bce bck bcp bct bcy be- bea beb bec bee bek bep bet bey bka bkb bkc bke bkk bkp bkt bpa bpb bpc bpe bpp bpt bpy bta btb btc bte btk btp btt bty by- bya byc bye byk byp byt c-- caa cab cac cae cak cap cat cay cba cbb cbc cbe cbk cbp cbt cby cca ccb ccc cce cck ccp cct ce- cea ceb cec cee cek cep cet cey cka ckb ckc ckt cky cpa cpb cpc cpe cpk cpp cpt cta ctb ctc cte ctk ctp ctt cty cya cyb cyc cye cyk cyp cyt eaa eab eac eae eak eap eat eba ebb ebc ebe ebk ebp ebt eby ec- eca ecb ecc ece eck ect eea eeb eec eee eek eep eet eey eka ekb ekc eke ekp ekt eky ep- epa epb epc epe epp ept eta etb etc ete etk etp ett ety eya eyc eye eyp eyt k-t ka- kaa kab kac kae kak kap kat kay kba kbb kbc kbe kbk kbp kca kcb kcc kce kck kcp kct ke- kea keb kec kee kek kep ket key kkb kkc kke kkk kkp kkt kky kpa kpc kpe kpk kpp kpt kta ktb ktc kte ktk ktp ktt kya kyc kye kyp kyt p-p paa pab pac pae pak pap pat pay pba pbb pbc pbe pbk pbp pbt pby pca pcb pcc pce pck pcp pct pea peb pec pee pek pep pet pey pka pkb pkc pke pkp pkt pky ppa ppb ppc ppe ppk ppp ppt pt- pta ptb ptc pte ptk ptp ptt pty py- pya pyb pyc pye pyk pyt taa tab tac tae tak tap tat tay tba tbb tbc tbe tbk tbp tbt tca tcb tcc tce tck tcp tct te- tea teb tec tee tek tep tet tey tka tkb tkc tke tkk tkp tkt tky tpa tpb tpc tpe tpk tpp tpt tta ttb ttc tte ttk ttp ttt tty tya tyc tye typ tyt yaa yab yac yae yak yap yat yay ybc ybe ybp yby yca ycc yce ycp ycy yea yeb yec yee yek yep yet yey yka ykk ypa yta ytc yte ytk ytp ytt yyb yyc yye yyt yyy