-er -ey b-u bbb bbe bbm bbo bbr bbt bbu bby be- beb bee bem beo ber bet beu bey bmb bme bmm bmo bmr bmt bmu bob boe bom boo bor bot bou boy brb bre brm bro brr brt bru bry btb bte btm bto btr btt btu bty bub bue bum buo bur but buu buy by- bye bym byo byr byt byu ebb ebe ebm ebo ebr ebt ebu eby eeb eee eem eeo eer eet eey em- emb eme emm emo emr emt emu eo- eob eoe eom eoo eor eot eou erb ere erm ero err ert eru ery etb ete etm eto etr ett etu ety eu- eub eue eur eut eye eym eyo eyr eyt m-o m-r mbb mbe mbm mbo mbr mbt mbu meb mee mem meo mer met meu mey mmb mme mmm mmo mmr mmt mmu mob moe mom moo mor mot mou moy mrb mre mrm mro mrr mrt mru mry mtb mte mtm mto mtr mtt mtu mub mue mum mur mut muu muy my- myb mye mym myo myr myt myu ob- obb obe obm obo obr obt obu oby oeb oee oem oeo oer oet oey om- omb ome omm omo omr omt omu omy oo- oob oom ooo oor oot or- orb ore orm oro orr ort oru ory ot- otb ote otm oto otr ott otu ou- oue oum ouo our out oye oyo rbb rbe rbm rbo rbr rbt rbu re- reb ree rem reo rer ret reu rey rmb rme rmm rmo rmr rmt rob roe rom roo ror rot rou roy rrb rrm rrr rrt rru rtb rte rtm rto rtr rtt rtu rty rub rue rum ruo rur rut ruu ruy ry- rye rym ryo ryr ryu ryy tbb tbe tbm tbo tbr tbt tbu te- teb tee tem teo ter tet teu tey tmb tme tmm tmo tmr tmt tmu tmy to- tob toe tom too tor tot tou toy trb tre trm tro trr trt tru try ttb tte ttm tto ttr ttt ttu tty tub tue tum tuo tur tut tuu tuy tye tym tyo tyr tyt ubb ube ubo ubr ubt ubu uby ueb uee uem uer uet uey um- umb ume umm umo umr umt umu uob uoe uom uoo uor uot ur- urb ure urm uro urr urt uru ury utb ute utm uto utr utt utu uty uue uum uur uut uuu uyo uyu ybe ybm ybr yby yeb yee yem yeo yer yet yey yme ymm ymo ymt yob yoe yom yoo yor yot you yoy yre yro yrt yru yte ytm yto ytr ytt ytu yue yum yuo yur yut yuu yuy yyb yye yyt yyu yyy