-ol bbb bbe bbi bbl bbo be- beb bee bei bel beo bez bi- bib bie bii bil bio biz blb ble bli bll blo blz bob boe boi bol boo boz bze bzo bzz ebb ebe ebi ebl ebo eeb eee eel eeo eib eie eii eil eio elb ele eli ell elo elz eo- eob eoe eoi eol eoo eze ezo ezz ibb ibe ibi ibl ibo ibz ie- iee iei iel iib iie iii iil iio il- ilb ile ili ill ilo ilz io- iob ioe ioi iol ioo ize izi izo izz lbb lbe lbi lbl lbo leb lee lei lel leo lez lib lie lii lil lio liz llb lle lli lll llo llz lob loe loi lol loo loz lzi lzo o-i ob- obb obe obi obl obo oeb oee oei oel oeo oib oie oii oil oio oiz olb ole oli oll olo oo- oob ooi ool ooo oze ozo ozz zbb zbl zeb zee zel zeo zez zib zie zil zio ziz zo- zob zoe zoi zol zoo zzz