-ey bbb bbc bbe bbm bbo bbt bby bcb bcc bce bcm bco bct bcy be- beb bec bee bem beo bet bey bmb bmc bme bmm bmo bmt bob boc boe bom boo bot boy btb btc bte btm bto btt bty by- byc bye bym byo byt c-- cbb cbc cbe cbm cbo cbt cby ccb ccc cce ccm cco cct ce- ceb cec cee cem ceo cet cey cmb cmc cme cmm cmo cmt cmy co- cob coc coe com coo cot coy ctb ctc cte ctm cto ctt cty cyb cyc cye cym cyo cyt ebb ebc ebe ebm ebo ebt eby ec- ecb ecc ece ecm eco ect eeb eec eee eem eeo eet eey em- emb emc eme emm emo emt eo- eob eoc eoe eom eoo eot etb etc ete etm eto ett ety eyc eye eym eyo eyt m-o mbb mbc mbe mbm mbo mbt mc- mcb mcc mce mcm mco mct meb mec mee mem meo met mey mmb mmc mme mmm mmo mmt mob moc moe mom moo mot moy mtb mtc mte mtm mto mtt my- myb myc mye mym myo myt ob- obb obc obe obm obo obt oby oc- ocb occ ocm oco oct oeb oec oee oem oeo oet oey om- omb omc ome omm omo omt omy oo- oob ooc oom ooo oot ot- otb otc ote otm oto ott oye oyo tbb tbc tbe tbm tbo tbt tcb tcc tce tcm tco tct te- teb tec tee tem teo tet tey tmb tmc tme tmm tmo tmt tmy to- tob toc toe tom too tot toy ttb ttc tte ttm tto ttt tty tyc tye tym tyo tyt ybc ybe ybm yby ycc yce yco ycy yeb yec yee yem yeo yet yey ymc yme ymm ymo ymt yob yoc yoe yom yoo yot yoy ytc yte ytm yto ytt yyb yyc yye yyt yyy