-ol bbb bbe bbi bbk bbl bbo bbt be- beb bee bei bek bel beo bet bi- bib bie bii bik bil bio bit bkb bke bkk bkl bko bkt blb ble bli blk bll blo blt bob boe boi bok bol boo bot btb bte bti btk btl bto btt ebb ebe ebi ebk ebl ebo ebt eeb eee eek eel eeo eet eib eie eii eik eil eio eit ekb eke eki ekl eko ekt elb ele eli elk ell elo elt eo- eob eoe eoi eok eol eoo eot etb ete eti etk etl eto ett ibb ibe ibi ibk ibl ibo ibt ie- iee iei iek iel iet iib iie iii iil iio iit ikb ike iki ikk ikl iko ikt il- ilb ile ili ilk ill ilo ilt io- iob ioe ioi iol ioo iot itb ite iti itk itl ito itt k-t kbb kbe kbi kbk kbl kbo ke- keb kee kei kek kel keo ket kib kie kii kik kil kio kit kkb kke kki kkk kkl kkt kl- klb kli klo klt kob koe koi kok kol koo kot ktb kte ktk ktl kto ktt lbb lbe lbi lbk lbl lbo lbt leb lee lei lek lel leo let lib lie lii lik lil lio lit lkb lkl lkt llb lle lli llk lll llo llt lob loe loi lok lol loo lot ltb lte lti ltk ltl lto ltt o-i ob- obb obe obi obk obl obo obt oeb oee oei oel oeo oet oib oie oii oik oil oio oit okb oke oki okk okl oko olb ole oli olk oll olo olt oo- oob ooi ook ool ooo oot ot- otb ote oti otk otl oto ott tbb tbe tbi tbk tbl tbo tbt te- teb tee tei tek tel teo tet tib tie tii tik til tio tit tkb tke tkk tkl tko tkt tle tli tlk tll tlo tlt to- tob toe toi tok tol too tot ttb tte tti ttk ttl tto ttt