-er -ey a-a a-b a-c aaa aab aac aae aar aas aav aay ab- aba abb abc abe abr abs abv aby ac- aca acb acc ace acr acs acv acy aea aeb aec aee aer aes aev aey ar- ara arb arc are arr ars arv ary as- asa asb asc ase asr ass asv asy av- ava avb avc ave avr avs avy ay- aya ayc aye ayr ays baa bab bac bae bar bas bav bay bba bbb bbc bbe bbr bbs bby bca bcb bcc bce bcr bcs bcv bcy be- bea beb bec bee ber bes bev bey bra brb bre brr brs brv bry bsa bsb bsc bse bsr bss bsv bsy bva bvb bvc bve bvr bvs bvv by- bya byc bye byr bys c-- caa cab cac cae car cas cav cay cba cbb cbc cbe cbr cbs cbv cby cca ccb ccc cce ccr ccs ccv ce- cea ceb cec cee cer ces cev cey cra crb crc cre crr crs crv cry csa csb csc cse csr css csv csy cva cvb cvc cve cvr cvs cvv cya cyb cyc cye cyr cys eaa eab eac eae ear eas eav eba ebb ebc ebe ebr ebs ebv eby ec- eca ecb ecc ece ecr ecs ecv eea eeb eec eee eer ees eev eey era erb erc ere err ers erv ery es- esa esb esc ese esr ess esv esy eva evb evc eve evr evs evv evy eya eyc eye eyr eys ra- raa rab rac rae rar ras rav ray rba rbb rbc rbe rbr rbs rca rcb rcc rce rcr rcs rcv re- rea reb rec ree rer res rev rey rra rrb rrc rrr rrs rsa rsb rsc rse rsr rss rsv rva rvb rvc rve rvr rvs rvv rvy ry- rya ryc rye ryr rys ryy saa sab sac sae sar sas sav say sba sbb sbc sbe sbr sbs sbv sby sca scb scc sce scr scs scv se- sea seb sec see ser ses sev sey sr- sra srb src sre srr srs srv sry ss- ssa ssb ssc sse ssr sss ssv sva svb svc sve svr svs svv svy sy- sya syb syc sye syr sys v-a v-e vaa vab vac vae var vas vav vay vba vbc vbr vbs vbv vca vcc vce vcr vcs vcy vea veb vec vee ver ves vey vra vrb vrc vre vrr vrs vry vsa vsb vsc vse vsr vss vsv vva vvb vvc vvr vvs vvv vye yaa yab yac yae yar yas yav yay ybc ybe ybr ybs yby yca ycc yce ycs ycv ycy yea yeb yec yee yer yes yev yey yra yrc yre yrs ysa ysb ysc yse ysr yss ysy yva yve yvr yvy yyb yyc yye yys yyy