bbb bbi bbm bbo bbs bbt bby bi- bib bii bim bio bis bit biy bmb bmi bmm bmo bms bmt bob boi bom boo bos bot boy bsb bsi bsm bso bss bst bsy btb bti btm bto bts btt bty by- byi bym byo bys byt ibb ibi ibm ibo ibs ibt iby iib iii iim iio iis iit im- imb imi imm imo ims imt imy io- iob ioi iom ioo ios iot is- isb isi ism iso iss ist isy itb iti itm ito its itt ity iym iyo iys iyt iyy m-o mbb mbi mbm mbo mbs mbt mi- mib mii mim mio mis mit miy mmb mmi mmm mmo mms mmt mob moi mom moo mos mot moy msb msi msm mso mss mst msy mtb mti mtm mto mts mtt my- myb mym myo mys myt o-i ob- obb obi obm obo obs obt oby oib oii oim oio ois oit om- omb omi omm omo oms omt omy oo- oob ooi oom ooo oos oot os- osb osi osm oso oss ost ot- otb oti otm oto ots ott oyi oyo oys sbb sbi sbm sbo sbs sbt sby sib sii sim sio sis sit smb smi smm smo sms smt smy sob soi som soo sos sot soy ss- ssb ssi ssm sso sss sst stb sti stm sto sts stt sty sy- syb syi sym sys syt tbb tbi tbm tbo tbs tbt tib tii tim tio tis tit tiy tmb tmi tmm tmo tms tmt tmy to- tob toi tom too tos tot toy tsb tsi tsm tso tss tst tsy ttb tti ttm tto tts ttt tty tym tyo tys tyt ybi ybm ybs yby yii yim yio yis yit ymi ymm ymo yms ymt yob yoi yom yoo yos yot yoy ysb ysi ysm yso yss yst ysy ytm yto yts ytt yyb yys yyt yyy