-er -ey bbb bbe bbm bbr bby be- beb bee bem ber bey bmb bme bmm bmr brb bre brm brr bry by- bye bym byr ebb ebe ebm ebr eby eeb eee eem eer eey em- emb eme emm emr erb ere erm err ery eye eym eyr m-r mbb mbe mbm mbr meb mee mem mer mey mmb mme mmm mmr mrb mre mrm mrr mry my- myb mye mym myr rbb rbe rbm rbr re- reb ree rem rer rey rmb rme rmm rmr rrb rrm rrr ry- rye rym ryr ryy ybe ybm ybr yby yeb yee yem yer yey yme ymm yre yyb yye yyy