-er -ey a-a a-c a-t aaa aac aae aap aar aat aax aay ac- aca acc ace acp acr act acx acy aea aec aee aep aer aet aex aey ap- apa apc ape app apr apt apx apy ar- ara arc are arp arr art arx ary at- ata atc ate atp atr att atx ax- axa axe axp axr axt axx ay- aya ayc aye ayp ayr ayt ayx c-- caa cac cae cap car cat cax cay cca ccc cce ccp ccr cct ccx ce- cea cec cee cep cer cet cex cey cpa cpc cpe cpp cpr cpt cpx cra crc cre crp crr crt crx cry cta ctc cte ctp ctr ctt ctx cty cxc cxp cxr cxt cxx cya cyc cye cyp cyr cyt eaa eac eae eap ear eat eax ec- eca ecc ece ecr ect ecx eea eec eee eep eer eet eex eey ep- epa epc epe epp epr ept epx era erc ere erp err ert ery eta etc ete etp etr ett etx ety ex- exa exc exe exp exr ext exx exy eya eyc eye eyp eyr eyt p-p paa pac pae pap par pat pax pay pca pcc pce pcp pcr pct pcx pea pec pee pep per pet pex pey ppa ppc ppe ppp ppr ppt ppx pra prc pre prp prr prt prx pry pt- pta ptc pte ptp ptr ptt ptx pty pxc pxe pxr pxt py- pya pyc pye pyr pyt pyx ra- raa rac rae rap rar rat rax ray rca rcc rce rcp rcr rct rcx re- rea rec ree rep rer ret rex rey rpa rpc rpe rpp rpr rpt rpx rra rrc rrp rrr rrt rta rtc rte rtp rtr rtt rtx rty rxp rxr ry- rya ryc rye ryr ryy t-x taa tac tae tap tar tat tax tay tca tcc tce tcp tcr tct tcx te- tea tec tee tep ter tet tex tey tpa tpc tpe tpp tpr tpt tpx tra trc tre trp trr trt trx try tta ttc tte ttp ttr ttt ttx tty txe txt tya tyc tye typ tyr tyt xaa xac xap xar xat xcp xcr xcx xee xep xer xet xex xpa xpc xpe xpp xpt xrc xrt xrx xry xtc xtp xtr xtx xty xxp xxx xxy xyp xyr xyy yaa yac yae yap yar yat yax yay yca ycc yce ycp ycy yea yec yee yep yer yet yex yey ypa yra yrc yre yrp yrt yta ytc yte ytp ytr ytt yxa yxe yxy yyc yye yyt yyy