bbb bbm bbo bbs bbt bby bmb bmm bmo bms bmt bob bom boo bos bot boy bsb bsm bso bss bst bsy btb btm bto bts btt bty by- bym byo bys byt m-o mbb mbm mbo mbs mbt mmb mmm mmo mms mmt mob mom moo mos mot moy msb msm mso mss mst msy mtb mtm mto mts mtt my- myb mym myo mys myt ob- obb obm obo obs obt oby om- omb omm omo oms omt omy oo- oob oom ooo oos oot os- osb osm oso oss ost ot- otb otm oto ots ott oyo oys sbb sbm sbo sbs sbt sby smb smm smo sms smt smy sob som soo sos sot soy ss- ssb ssm sso sss sst stb stm sto sts stt sty sy- syb sym sys syt tbb tbm tbo tbs tbt tmb tmm tmo tms tmt tmy to- tob tom too tos tot toy tsb tsm tso tss tst tsy ttb ttm tto tts ttt tty tym tyo tys tyt ybm ybs yby ymm ymo yms ymt yob yom yoo yos yot yoy ysb ysm yso yss yst ysy ytm yto yts ytt yyb yys yyt yyy