-ol bbb bbd bbe bbi bbk bbl bbo bdb bdd bde bdi bdk bdl bdo be- beb bed bee bei bek bel beo bi- bib bid bie bii bik bil bio bkb bke bkk bkl bko blb bld ble bli blk bll blo bob bod boe boi bok bol boo dbb dbd dbe dbi dbk dbl dbo ddb ddd dde ddi ddk ddl ddo de- deb ded dee dei dek del deo di- dib did die dii dik dil dio dkb dke dki dkk dkl dko dl- dlb dld dle dli dlk dll dlo dob dod doe doi dok dol doo ebb ebd ebe ebi ebk ebl ebo ed- edb edd ede edi edk edl edo eeb eed eee eek eel eeo eib eid eie eii eik eil eio ekb ekd eke eki ekl eko elb eld ele eli elk ell elo eo- eob eod eoe eoi eok eol eoo i-d ibb ibd ibe ibi ibk ibl ibo idb idd ide idi idk idl ido ie- ied iee iei iek iel iib iid iie iii iil iio ikb ike iki ikk ikl iko il- ilb ild ile ili ilk ill ilo io- iob iod ioe ioi iol ioo kbb kbd kbe kbi kbk kbl kbo kdb kde kdk kdl kdo ke- keb ked kee kei kek kel keo kib kid kie kii kik kil kio kkb kke kki kkk kkl kl- klb kld kli klo kob kod koe koi kok kol koo lbb lbd lbe lbi lbk lbl lbo ldb ldd lde ldi ldk ldl ldo leb led lee lei lek lel leo lib lid lie lii lik lil lio lkb lkl llb lld lle lli llk lll llo lob lod loe loi lok lol loo o-i ob- obb obd obe obi obk obl obo odb odd ode odi odl odo oeb oed oee oei oel oeo oib oid oie oii oik oil oio okb okd oke oki okk okl oko olb old ole oli olk oll olo oo- oob ood ooi ook ool ooo