-ol bbb bbe bbh bbk bbl bbo be- beb bee beh bek bel beo bhb bhe bhh bhk bhl bho bkb bke bkk bkl bko blb ble blh blk bll blo bob boe boh bok bol boo ebb ebe ebh ebk ebl ebo eeb eee eek eel eeo ehb ehe ehh ehl eho ekb eke ekh ekl eko elb ele elh elk ell elo eo- eob eoe eoh eok eol eoo hbb hbe hbh hbk hbl hbo he- heb hee heh hek hel heo hhb hhe hhh hhk hhl hho hkb hkh hkk hkl hko hlb hle hlh hll hlo hob hoe hoh hok hol hoo kbb kbe kbh kbk kbl kbo ke- keb kee keh kek kel keo khe khh khk kho kkb kke kkh kkk kkl kl- klb klh klo kob koe koh kok kol koo lbb lbe lbh lbk lbl lbo leb lee leh lek lel leo lhb lhh lhk lho lkb lkh lkl llb lle llk lll llo lob loe loh lok lol loo ob- obb obe obh obk obl obo oeb oee oeh oel oeo ohe ohh ohl oho okb oke okk okl oko olb ole olk oll olo oo- oob ooh ook ool ooo