-er -ey a-a a-b a-c aaa aab aac aae aam aar aay ab- aba abb abc abe abm abr aby ac- aca acb acc ace acm acr acy aea aeb aec aee aem aer aey ama amb amc ame amm amr amy ar- ara arb arc are arm arr ary ay- aya ayc aye ayr baa bab bac bae bam bar bay bba bbb bbc bbe bbm bbr bby bca bcb bcc bce bcm bcr bcy be- bea beb bec bee bem ber bey bma bmb bmc bme bmm bmr bra brb bre brm brr bry by- bya byc bye bym byr c-- caa cab cac cae cam car cay cba cbb cbc cbe cbm cbr cby cca ccb ccc cce ccm ccr ce- cea ceb cec cee cem cer cey cma cmb cmc cme cmm cmr cmy cra crb crc cre crm crr cry cya cyb cyc cye cym cyr eaa eab eac eae eam ear eba ebb ebc ebe ebm ebr eby ec- eca ecb ecc ece ecm ecr eea eeb eec eee eem eer eey em- ema emb emc eme emm emr era erb erc ere erm err ery eya eyc eye eym eyr m-r maa mab mac mae mam mar may mba mbb mbc mbe mbm mbr mc- mca mcb mcc mce mcm mcr mea meb mec mee mem mer mey mma mmb mmc mme mmm mmr mra mrb mrc mre mrm mrr mry my- mya myb myc mye mym myr ra- raa rab rac rae ram rar ray rba rbb rbc rbe rbm rbr rca rcb rcc rce rcm rcr re- rea reb rec ree rem rer rey rma rmb rmc rme rmm rmr rra rrb rrc rrm rrr ry- rya ryc rye rym ryr ryy yaa yab yac yae yam yar yay ybc ybe ybm ybr yby yca ycc yce ycy yea yeb yec yee yem yer yey yma ymc yme ymm yra yrc yre yyb yyc yye yyy