-ey bbb bbc bbd bbe bbm bbo bby bcb bcc bcd bce bcm bco bcy bdb bdc bdd bde bdm bdo bdy be- beb bec bed bee bem beo bey bmb bmc bmd bme bmm bmo bob boc bod boe bom boo boy by- byc byd bye bym byo c-- cbb cbc cbd cbe cbm cbo cby ccb ccc ccd cce ccm cco cdb cdc cdd cde cdm cdo cdy ce- ceb cec ced cee cem ceo cey cmb cmc cmd cme cmm cmo cmy co- cob coc cod coe com coo coy cyb cyc cyd cye cym cyo dbb dbc dbd dbe dbm dbo dby dcb dcc dcd dce dcm dco ddb ddc ddd dde ddm ddo ddy de- deb dec ded dee dem deo dey dmb dmc dmd dme dmm dmo dob doc dod doe dom doo doy dy- dyb dyc dyd dye dym dyo dyy ebb ebc ebd ebe ebm ebo eby ec- ecb ecc ecd ece ecm eco ed- edb edc edd ede edm edo edy eeb eec eed eee eem eeo eey em- emb emc emd eme emm emo eo- eob eoc eod eoe eom eoo eyc eyd eye eym eyo m-o mbb mbc mbd mbe mbm mbo mc- mcb mcc mcd mce mcm mco mdb mdc mdd mde mdm mdo mdy meb mec med mee mem meo mey mmb mmc mmd mme mmm mmo mob moc mod moe mom moo moy my- myb myc myd mye mym myo ob- obb obc obd obe obm obo oby oc- ocb occ ocd ocm oco odb odc odd ode odm odo oeb oec oed oee oem oeo oey om- omb omc omd ome omm omo omy oo- oob ooc ood oom ooo oyd oye oyo ybc ybe ybm yby ycc ycd yce yco ycy yde ydo ydy yeb yec yed yee yem yeo yey ymc yme ymm ymo yob yoc yod yoe yom yoo yoy yyb yyc yye yyy