-ey b-p bbb bbe bbi bbk bbo bbp bby be- beb bee bei bek beo bep bey bi- bib bie bii bik bio bip biy bkb bke bkk bko bkp bob boe boi bok boo bop boy bpb bpe bpi bpo bpp bpy by- bye byi byk byo byp ebb ebe ebi ebk ebo ebp eby eeb eee eek eeo eep eey eib eie eii eik eio eip ekb eke eki eko ekp eky eo- eob eoe eoi eok eoo eop ep- epb epe epi epo epp eye eyo eyp ibb ibe ibi ibk ibo ibp iby ie- iee iei iek iep iey iib iie iii iio iip ikb ike iki ikk iko io- iob ioe ioi ioo iop ipb ipe ipi ipo ipp ipy iye iyo iyy kbb kbe kbi kbk kbo kbp ke- keb kee kei kek keo kep key kib kie kii kik kio kip kkb kke kki kkk kkp kky kob koe koi kok koo kop koy kpe kpi kpk kpo kpp kye kyo kyp o-i ob- obb obe obi obk obo obp oby oeb oee oei oeo oep oey oib oie oii oik oio oip okb oke oki okk oko okp oo- oob ooi ook ooo oop op- opb ope opi opk opo opp opy oye oyi oyo p-p pbb pbe pbi pbk pbo pbp pby peb pee pei pek peo pep pey pib pie pii pik pio pip pkb pke pki pko pkp pky pob poe poi pok poo pop poy ppb ppe ppi ppk ppo ppp py- pyb pye pyk pyo ybe ybi ybp yby yeb yee yei yek yeo yep yey yie yii yio yip yki ykk yob yoe yoi yok yoo yop yoy ypo yyb yye yyy