-er -ol bbb bbd bbe bbl bbo bbr bbw bdb bdd bde bdl bdo bdr bdv bdw be- beb bed bee bel beo ber bev bew blb bld ble bll blo blr blv bob bod boe bol boo bor bov bow brb brd bre brl bro brr brv brw bvb bvd bve bvl bvo bvr bvv bvw bwb bwd bwl bwo bwr bwv dbb dbd dbe dbl dbo dbr dbv ddb ddd dde ddl ddo ddr ddw de- deb ded dee del deo der dev dew dl- dlb dld dle dll dlo dlr dlv dob dod doe dol doo dor dov dow drb drd dre drl dro drr drv drw dvb dvd dve dvl dvr dvw dwb dwe dwo dwr dwv dww ebb ebd ebe ebl ebo ebr ebv ebw ed- edb edd ede edl edo edr edw eeb eed eee eel eeo eer eev eew elb eld ele ell elo elr elv elw eo- eob eod eoe eol eoo eor eow erb erd ere erl ero err erv erw evb evd eve evl evo evr evv evw ewb ewd ewe ewl ewo ewr eww lbb lbd lbe lbl lbo lbr lbv lbw ldb ldd lde ldl ldo ldr ldv ldw leb led lee lel leo ler lev lew llb lld lle lll llo llr llv llw lob lod loe lol loo lor lov low lrb lrd lro lrr lrv lrw lvb lvd lve lvl lvr lvv lwb lwd lwl lwo lwr lww ob- obb obd obe obl obo obr obv obw odb odd ode odl odo odr odv oeb oed oee oel oeo oer olb old ole oll olo olw oo- oob ood ool ooo oor oov oow or- orb ord ore orl oro orr orv ov- ovb ovd ove ovl ovo ovv owb owd owe owl owo oww rbb rbd rbe rbl rbo rbr rbw rdb rdd rde rdl rdo rdr rdv re- reb red ree rel reo rer rev rew rld rle rll rlo rlr rlw rob rod roe rol roo ror rov row rrb rrd rrl rrr rvb rvd rve rvl rvo rvr rvv rvw rwb rwd rwe rwl rwr v-e vbd vbl vbo vbr vbv vbw vdb vdd vde vdl vdo vdr vdv vdw veb ved vee vel veo ver vew vl- vlb vld vle vll vlo vlv vlw vob vod voe vol voo vor vov vow vrb vrd vre vrr vvb vvo vvr vvv vwd vwo wbb wbd wbe wbo wbr wbw wdb wdl wdr wdv web wed wee wel weo wer wew wl- wlb wle wll wlo wlr wlw wob wod woe wol woo wor wow wr- wrd wre wrl wro wrr wrw wvw wwd wwe wwl wwo wwv www