-ol bbb bbe bbi bbl bbo bbt be- beb bee bei bel beo bet bev bi- bib bie bii bil bio bit biv blb ble bli bll blo blt blv bob boe boi bol boo bot bov btb bte bti btl bto btt btv bvb bve bvi bvl bvo bvt bvv ebb ebe ebi ebl ebo ebt ebv eeb eee eel eeo eet eev eib eie eii eil eio eit eiv elb ele eli ell elo elt elv eo- eob eoe eoi eol eoo eot etb ete eti etl eto ett etv evb eve evi evl evo evt evv i-v ibb ibe ibi ibl ibo ibt ibv ie- iee iei iel iet iev iib iie iii iil iio iit il- ilb ile ili ill ilo ilt ilv io- iob ioe ioi iol ioo iot iov itb ite iti itl ito itt itv ivb ive ivi ivl ivo ivt ivv lbb lbe lbi lbl lbo lbt lbv leb lee lei lel leo let lev lib lie lii lil lio lit liv llb lle lli lll llo llt llv lob loe loi lol loo lot lov ltb lte lti ltl lto ltt ltv lvb lve lvi lvl lvt lvv o-i ob- obb obe obi obl obo obt obv oeb oee oei oel oeo oet oib oie oii oil oio oit oiv olb ole oli oll olo olt oo- oob ooi ool ooo oot oov ot- otb ote oti otl oto ott otv ov- ovb ove ovi ovl ovo ovv tbb tbe tbi tbl tbo tbt tbv te- teb tee tei tel teo tet tev tib tie tii til tio tit tiv tle tli tll tlo tlt tlv to- tob toe toi tol too tot tov ttb tte tti ttl tto ttt ttv tvb tve tvi tvl tvo tvt v-e vbi vbl vbo vbv veb vee vei vel veo vet vi- vib vie vii vil vio vit viv vl- vlb vle vll vlo vlt vlv vob voe voi vol voo vot vov vtb vte vti vtl vto vtt vtv vvb vvi vvo vvt vvv