-ey a-a a-c a-t aaa aac aae aap aas aat aax aay ac- aca acc ace acp acs act acx acy aea aec aee aep aes aet aex aey ap- apa apc ape app aps apt apx apy as- asa asc ase asp ass ast asx asy at- ata atc ate atp ats att atx ax- axa axe axp axs axt axx ay- aya ayc aye ayp ays ayt ayx c-- caa cac cae cap cas cat cax cay cca ccc cce ccp ccs cct ccx ce- cea cec cee cep ces cet cex cey cpa cpc cpe cpp cps cpt cpx csa csc cse csp css cst csx csy cta ctc cte ctp cts ctt ctx cty cxc cxp cxs cxt cxx cya cyc cye cyp cys cyt eaa eac eae eap eas eat eax ec- eca ecc ece ecs ect ecx eea eec eee eep ees eet eex eey ep- epa epc epe epp eps ept epx es- esa esc ese esp ess est esx esy eta etc ete etp ets ett etx ety ex- exa exc exe exp exs ext exx exy eya eyc eye eyp eys eyt p-p paa pac pae pap pas pat pax pay pca pcc pce pcp pcs pct pcx pea pec pee pep pes pet pex pey ppa ppc ppe ppp pps ppt ppx ps- psa psc pse psp pss pst psx psy pt- pta ptc pte ptp pts ptt ptx pty pxc pxe pxs pxt py- pya pyc pye pys pyt pyx saa sac sae sap sas sat sax say sca scc sce scp scs sct scx se- sea sec see sep ses set sex sey spa spc spe spp sps spt spx spy ss- ssa ssc sse ssp sss sst ssx sta stc ste stp sts stt stx sty sxc sxs sxt sy- sya syc sye syp sys syt syx t-x taa tac tae tap tas tat tax tay tca tcc tce tcp tcs tct tcx te- tea tec tee tep tes tet tex tey tpa tpc tpe tpp tps tpt tpx tsa tsc tse tsp tss tst tsx tsy tta ttc tte ttp tts ttt ttx tty txe txs txt tya tyc tye typ tys tyt xaa xac xap xas xat xcp xcx xee xep xes xet xex xpa xpc xpe xpp xps xpt xsa xsc xsp xss xst xtc xtp xts xtx xty xxp xxx xxy xyp xyy yaa yac yae yap yas yat yax yay yca ycc yce ycp ycs ycy yea yec yee yep yes yet yex yey ypa yps ysa ysc yse ysp yss yst ysy yta ytc yte ytp yts ytt yxa yxe yxy yyc yye yys yyt yyy