-er -ol bbb bbd bbe bbi bbl bbo bbr bbs bdb bdd bde bdi bdl bdo bdr bds be- beb bed bee bei bel beo ber bes bi- bib bid bie bii bil bio bir bis blb bld ble bli bll blo blr bls bob bod boe boi bol boo bor bos brb brd bre bri brl bro brr brs bsb bsd bse bsi bsl bso bsr bss dbb dbd dbe dbi dbl dbo dbr dbs ddb ddd dde ddi ddl ddo ddr dds de- deb ded dee dei del deo der des di- dib did die dii dil dio dir dis dl- dlb dld dle dli dll dlo dlr dls dob dod doe doi dol doo dor dos drb drd dre dri drl dro drr drs dsb dsd dse dsi dsl dso dsr dss ebb ebd ebe ebi ebl ebo ebr ebs ed- edb edd ede edi edl edo edr eds eeb eed eee eel eeo eer ees eib eid eie eii eil eio eir eis elb eld ele eli ell elo elr els eo- eob eod eoe eoi eol eoo eor eos erb erd ere eri erl ero err ers es- esb esd ese esi esl eso esr ess i-d ibb ibd ibe ibi ibl ibo ibr ibs idb idd ide idi idl ido idr ids ie- ied iee iei iel ier ies iib iid iie iii iil iio iir iis il- ilb ild ile ili ill ilo ilr ils io- iob iod ioe ioi iol ioo ior ios ir- irb ird ire iri irl iro irr irs is- isb isd ise isi isl iso isr iss lbb lbd lbe lbi lbl lbo lbr lbs ldb ldd lde ldi ldl ldo ldr lds leb led lee lei lel leo ler les lib lid lie lii lil lio lir lis llb lld lle lli lll llo llr lls lob lod loe loi lol loo lor los lrb lrd lri lro lrr lrs lsb lsd lse lsi lsl lso lsr lss o-i ob- obb obd obe obi obl obo obr obs odb odd ode odi odl odo odr ods oeb oed oee oei oel oeo oer oes oib oid oie oii oil oio oir ois olb old ole oli oll olo ols oo- oob ood ooi ool ooo oor oos or- orb ord ore ori orl oro orr ors os- osb osd ose osi osl oso osr oss rbb rbd rbe rbi rbl rbo rbr rbs rdb rdd rde rdi rdl rdo rdr rds re- reb red ree rei rel reo rer res rib rid rie rii ril rio rir ris rld rle rli rll rlo rlr rls rob rod roe roi rol roo ror ros rrb rrd rri rrl rrr rrs rsb rsd rse rsi rsl rso rsr rss sbb sbd sbe sbi sbl sbo sbr sbs sdb sdd sde sdi sdl sdo sdr sds se- seb sed see sei sel seo ser ses sib sid sie sii sil sio sir sis slb sld sle sli sll slo slr sls sob sod soe soi sol soo sor sos sr- srb srd sre sri srl sro srr srs ss- ssb ssd sse ssi ssl sso ssr sss