-ey a-a a-c a-t aaa aac aae aap aas aat aay ac- aca acc ace acp acs act acy aea aec aee aep aes aet aey ap- apa apc ape app aps apt apy as- asa asc ase asp ass ast asy at- ata atc ate atp ats att ay- aya ayc aye ayp ays ayt c-- caa cac cae cap cas cat cay cca ccc cce ccp ccs cct ce- cea cec cee cep ces cet cey cpa cpc cpe cpp cps cpt csa csc cse csp css cst csy cta ctc cte ctp cts ctt cty cya cyc cye cyp cys cyt eaa eac eae eap eas eat ec- eca ecc ece ecs ect eea eec eee eep ees eet eey ep- epa epc epe epp eps ept es- esa esc ese esp ess est esy eta etc ete etp ets ett ety eya eyc eye eyp eys eyt p-p paa pac pae pap pas pat pay pca pcc pce pcp pcs pct pea pec pee pep pes pet pey ppa ppc ppe ppp pps ppt ps- psa psc pse psp pss pst psy pt- pta ptc pte ptp pts ptt pty py- pya pyc pye pys pyt saa sac sae sap sas sat say sca scc sce scp scs sct se- sea sec see sep ses set sey spa spc spe spp sps spt spy ss- ssa ssc sse ssp sss sst sta stc ste stp sts stt sty sy- sya syc sye syp sys syt taa tac tae tap tas tat tay tca tcc tce tcp tcs tct te- tea tec tee tep tes tet tey tpa tpc tpe tpp tps tpt tsa tsc tse tsp tss tst tsy tta ttc tte ttp tts ttt tty tya tyc tye typ tys tyt yaa yac yae yap yas yat yay yca ycc yce ycp ycs ycy yea yec yee yep yes yet yey ypa yps ysa ysc yse ysp yss yst ysy yta ytc yte ytp yts ytt yyc yye yys yyt yyy