-ey bbb bbc bbe bbf bbk bbo bby bcb bcc bce bcf bcj bck bco bcy be- beb bec bee bef bek beo bey bfb bfc bfe bff bfj bfo bfy bjc bjf bjj bjk bkb bkc bke bkf bkk bko bob boc boe bof boj bok boo boy by- byc bye byf byj byk byo c-- c-j cbb cbc cbe cbf cbj cbk cbo cby ccb ccc cce ccf ccj cck cco ce- ceb cec cee cef cej cek ceo cey cfb cfc cfe cff cfk cfo cjb cjc cjf cjk ckb ckc cko cky co- cob coc coe cof coj cok coo coy cyb cyc cye cyf cyk cyo ebb ebc ebe ebf ebj ebk ebo eby ec- ecb ecc ece ecf ecj eck eco eeb eec eee eef eek eeo eey ef- efb efc efe eff efo ejc ejf ejo ekb ekc eke ekf eko eky eo- eob eoc eoe eof eok eoo eyc eye eyo fbb fbc fbe fbf fbk fbo fcb fcc fce fcf fcj fck fco fcy feb fec fee fef fek feo fey ffc ffe fff ffk ffo ffy fjb fjc fkb fkc fkf fkj fkk fob foc foe fof fok foo foy fy- fyb fyc fye fyj fyk fyo jbc jbf jbj jbk jbo jcb jcc jce jcf jck jco jeb jec jee jef jej jek jeo jey jfb jfc jfe jff jfj jfk jfo jjb jjc jjf jjj jjk jjy jkb jkk jko job joc joe jof joj jok joo joy jyj kbb kbc kbe kbf kbk kbo kcb kcc kce kck ke- keb kec kee kef kek keo key kfc kff kfo kjb kjc kje kkb kkc kke kkk kky kob koc koe kof kok koo koy kyc kye kyo ob- obb obc obe obf obj obk obo oby oc- ocb occ ocf ocj ock oco oeb oec oee oef oeo oey of- ofb ofc ofe off ofo ojb ojc oje ojo ojy okb okc oke okj okk oko oo- oob ooc oof ook ooo oye oyo ybc ybe ybf yby ycc yce ycf yco ycy yeb yec yee yef yek yeo yey yfc yfe yff ykk yob yoc yoe yof yoj yok yoo yoy yyb yyc yye yyf yyy