-ol bbb bbd bbe bbl bbo bdb bdd bde bdl bdo bdv be- beb bed bee bel beo bev blb bld ble bll blo blv bob bod boe bol boo bov bvb bvd bve bvl bvo bvv dbb dbd dbe dbl dbo dbv ddb ddd dde ddl ddo de- deb ded dee del deo dev dl- dlb dld dle dll dlo dlv dob dod doe dol doo dov dvb dvd dve dvl ebb ebd ebe ebl ebo ebv ed- edb edd ede edl edo eeb eed eee eel eeo eev elb eld ele ell elo elv eo- eob eod eoe eol eoo evb evd eve evl evo evv lbb lbd lbe lbl lbo lbv ldb ldd lde ldl ldo ldv leb led lee lel leo lev llb lld lle lll llo llv lob lod loe lol loo lov lvb lvd lve lvl lvv ob- obb obd obe obl obo obv odb odd ode odl odo odv oeb oed oee oel oeo olb old ole oll olo oo- oob ood ool ooo oov ov- ovb ovd ove ovl ovo ovv v-e vbd vbl vbo vbv vdb vdd vde vdl vdo vdv veb ved vee vel veo vl- vlb vld vle vll vlo vlv vob vod voe vol voo vov vvb vvo vvv