-ol bbb bbe bbi bbk bbl bbo be- beb bee bei bek bel beo bev bi- bib bie bii bik bil bio biv bkb bke bkk bkl bko bkv blb ble bli blk bll blo blv bob boe boi bok bol boo bov bvb bve bvi bvk bvl bvo bvv ebb ebe ebi ebk ebl ebo ebv eeb eee eek eel eeo eev eib eie eii eik eil eio eiv ekb eke eki ekl eko ekv elb ele eli elk ell elo elv eo- eob eoe eoi eok eol eoo evb eve evi evl evo evv i-v ibb ibe ibi ibk ibl ibo ibv ie- iee iei iek iel iev iib iie iii iil iio ikb ike iki ikk ikl iko ikv il- ilb ile ili ilk ill ilo ilv io- iob ioe ioi iol ioo iov ivb ive ivi ivl ivo ivv kbb kbe kbi kbk kbl kbo ke- keb kee kei kek kel keo kev kib kie kii kik kil kio kiv kkb kke kki kkk kkl kkv kl- klb kli klo klv kob koe koi kok kol koo kvb kvi kvk kvo kvv lbb lbe lbi lbk lbl lbo lbv leb lee lei lek lel leo lev lib lie lii lik lil lio liv lkb lkl llb lle lli llk lll llo llv lob loe loi lok lol loo lov lvb lve lvi lvl lvv o-i ob- obb obe obi obk obl obo obv oeb oee oei oel oeo oib oie oii oik oil oio oiv okb oke oki okk okl oko olb ole oli olk oll olo oo- oob ooi ook ool ooo oov ov- ovb ove ovi ovl ovo ovv v-e vbi vbk vbl vbo vbv veb vee vei vek vel veo vi- vib vie vii vik vil vio viv vkb vl- vlb vle vlk vll vlo vlv vob voe voi vok vol voo vov vvb vvi vvo vvv