-er -ol bbb bbd bbe bbi bbl bbo bbr bdb bdd bde bdi bdl bdo bdr bdv be- beb bed bee bei bel beo ber bev bi- bib bid bie bii bil bio bir biv blb bld ble bli bll blo blr blv bob bod boe boi bol boo bor bov brb brd bre bri brl bro brr brv bvb bvd bve bvi bvl bvo bvr bvv dbb dbd dbe dbi dbl dbo dbr dbv ddb ddd dde ddi ddl ddo ddr de- deb ded dee dei del deo der dev di- dib did die dii dil dio dir div dl- dlb dld dle dli dll dlo dlr dlv dob dod doe doi dol doo dor dov drb drd dre dri drl dro drr drv dvb dvd dve dvi dvl dvr ebb ebd ebe ebi ebl ebo ebr ebv ed- edb edd ede edi edl edo edr eeb eed eee eel eeo eer eev eib eid eie eii eil eio eir eiv elb eld ele eli ell elo elr elv eo- eob eod eoe eoi eol eoo eor erb erd ere eri erl ero err erv evb evd eve evi evl evo evr evv i-d i-v ibb ibd ibe ibi ibl ibo ibr ibv idb idd ide idi idl ido idr idv ie- ied iee iei iel ier iev iib iid iie iii iil iio iir il- ilb ild ile ili ill ilo ilr ilv io- iob iod ioe ioi iol ioo ior iov ir- irb ird ire iri irl iro irr irv ivb ivd ive ivi ivl ivo ivr ivv lbb lbd lbe lbi lbl lbo lbr lbv ldb ldd lde ldi ldl ldo ldr ldv leb led lee lei lel leo ler lev lib lid lie lii lil lio lir liv llb lld lle lli lll llo llr llv lob lod loe loi lol loo lor lov lrb lrd lri lro lrr lrv lvb lvd lve lvi lvl lvr lvv o-i ob- obb obd obe obi obl obo obr obv odb odd ode odi odl odo odr odv oeb oed oee oei oel oeo oer oib oid oie oii oil oio oir oiv olb old ole oli oll olo oo- oob ood ooi ool ooo oor oov or- orb ord ore ori orl oro orr orv ov- ovb ovd ove ovi ovl ovo ovv rbb rbd rbe rbi rbl rbo rbr rdb rdd rde rdi rdl rdo rdr rdv re- reb red ree rei rel reo rer rev rib rid rie rii ril rio rir riv rld rle rli rll rlo rlr rob rod roe roi rol roo ror rov rrb rrd rri rrl rrr rvb rvd rve rvi rvl rvo rvr rvv v-e vbd vbi vbl vbo vbr vbv vdb vdd vde vdi vdl vdo vdr vdv veb ved vee vei vel veo ver vi- vib vid vie vii vil vio vir viv vl- vlb vld vle vll vlo vlv vob vod voe voi vol voo vor vov vrb vrd vre vri vrr vvb vvi vvo vvr vvv