-ol bbb bbd bbe bbi bbl bbo bdb bdd bde bdi bdl bdo be- beb bed bee bei bel beo bi- bib bid bie bii bil bio blb bld ble bli bll blo bob bod boe boi bol boo dbb dbd dbe dbi dbl dbo ddb ddd dde ddi ddl ddo de- deb ded dee dei del deo di- dib did die dii dil dio dl- dlb dld dle dli dll dlo dob dod doe doi dol doo ebb ebd ebe ebi ebl ebo ed- edb edd ede edi edl edo eeb eed eee eel eeo eib eid eie eii eil eio elb eld ele eli ell elo eo- eob eod eoe eoi eol eoo i-d ibb ibd ibe ibi ibl ibo idb idd ide idi idl ido ie- ied iee iei iel iib iid iie iii iil iio il- ilb ild ile ili ill ilo io- iob iod ioe ioi iol ioo lbb lbd lbe lbi lbl lbo ldb ldd lde ldi ldl ldo leb led lee lei lel leo lib lid lie lii lil lio llb lld lle lli lll llo lob lod loe loi lol loo o-i ob- obb obd obe obi obl obo odb odd ode odi odl odo oeb oed oee oei oel oeo oib oid oie oii oil oio olb old ole oli oll olo oo- oob ood ooi ool ooo