-ic bbb bbc bbd bbi bbm bbo bby bcb bcc bcd bci bcm bco bcy bdb bdc bdd bdi bdm bdo bdy bi- bib bic bid bii bim bio biy bmb bmc bmd bmi bmm bmo bob boc bod boi bom boo boy by- byc byd byi bym byo c-- cbb cbc cbd cbi cbm cbo cby ccb ccc ccd cci ccm cco cdb cdc cdd cdi cdm cdo cdy ci- cib cic cid cii cim cio cmb cmc cmd cmi cmm cmo cmy co- cob coc cod coi com coo coy cyb cyc cyd cym cyo dbb dbc dbd dbi dbm dbo dby dcb dcc dcd dci dcm dco ddb ddc ddd ddi ddm ddo ddy di- dib dic did dii dim dio diy dmb dmc dmd dmi dmm dmo dob doc dod doi dom doo doy dy- dyb dyc dyd dym dyo dyy i-d ibb ibc ibd ibi ibm ibo iby icb icc icd ici icm ico icy idb idc idd idi idm ido idy iib iic iid iii iim iio im- imb imc imd imi imm imo imy io- iob ioc iod ioi iom ioo iyc iym iyo iyy m-o mbb mbc mbd mbi mbm mbo mc- mcb mcc mcd mci mcm mco mdb mdc mdd mdi mdm mdo mdy mi- mib mic mid mii mim mio miy mmb mmc mmd mmi mmm mmo mob moc mod moi mom moo moy my- myb myc myd mym myo o-i ob- obb obc obd obi obm obo oby oc- ocb occ ocd oci ocm oco odb odc odd odi odm odo oib oic oid oii oim oio om- omb omc omd omi omm omo omy oo- oob ooc ood ooi oom ooo oyd oyi oyo ybc ybi ybm yby ycc ycd yci yco ycy ydo ydy yid yii yim yio ymc ymi ymm ymo yob yoc yod yoi yom yoo yoy yyb yyc yyy