-er -ol bbb bbe bbf bbi bbl bbo bbr be- beb bee bef bei bel beo ber bev bfb bfe bff bfi bfl bfo bfr bfv bi- bib bie bif bii bil bio bir biv blb ble blf bli bll blo blr blv bob boe bof boi bol boo bor bov brb bre brf bri brl bro brr brv bvb bve bvi bvl bvo bvr bvv ebb ebe ebf ebi ebl ebo ebr ebv eeb eee eef eel eeo eer eev ef- efb efe eff efi efl efo efr eib eie eif eii eil eio eir eiv elb ele elf eli ell elo elr elv eo- eob eoe eof eoi eol eoo eor erb ere erf eri erl ero err erv evb eve evf evi evl evo evr evv fbb fbe fbf fbi fbl fbo fbr feb fee fef fei fel feo fer fev ffe fff ffi ffl ffo ffr ffv fib fie fif fii fil fir flb fle flf fli fll flo flr fob foe fof foi fol foo for frb fre frf fri frl fro frr i-f i-v ibb ibe ibf ibi ibl ibo ibr ibv ie- iee ief iei iel ier iev ifb ife iff ifi ifl ifo ifr iib iie iif iii iil iio iir il- ilb ile ilf ili ill ilo ilr ilv io- iob ioe iof ioi iol ioo ior iov ir- irb ire irf iri irl iro irr irv ivb ive ivf ivi ivl ivo ivr ivv lbb lbe lbf lbi lbl lbo lbr lbv leb lee lef lei lel leo ler lev lfb lfe lff lfi lfl lfo lfr lib lie lif lii lil lio lir liv llb lle llf lli lll llo llr llv lob loe lof loi lol loo lor lov lrb lrf lri lro lrr lrv lvb lve lvf lvi lvl lvr lvv o-i ob- obb obe obf obi obl obo obr obv oeb oee oef oei oel oeo oer of- ofb ofe off ofi ofl ofo ofr ofv oib oie oif oii oil oio oir oiv olb ole olf oli oll olo oo- oob oof ooi ool ooo oor oov or- orb ore orf ori orl oro orr orv ov- ovb ove ovf ovi ovl ovo ovv rbb rbe rbf rbi rbl rbo rbr re- reb ree ref rei rel reo rer rev rfb rfe rff rfi rfl rfo rfr rfv rib rie rif rii ril rio rir riv rle rlf rli rll rlo rlr rob roe rof roi rol roo ror rov rrb rrf rri rrl rrr rvb rve rvf rvi rvl rvo rvr rvv v-e vbi vbl vbo vbr vbv veb vee vef vei vel veo ver vfb vff vfi vfl vfr vfv vi- vib vie vif vii vil vio vir viv vl- vlb vle vlf vll vlo vlv vob voe vof voi vol voo vor vov vrb vre vrf vri vrr vvb vvi vvo vvr vvv