-er -ol bbb bbd bbe bbl bbn bbo bbr bbs bdb bdd bde bdl bdo bdr bds be- beb bed bee bel ben beo ber bes blb bld ble bll bln blo blr bls bnb bnd bne bnl bnn bno bnr bns bob bod boe bol bon boo bor bos brb brd bre brl brn bro brr brs bsb bsd bse bsl bsn bso bsr bss dbb dbd dbe dbl dbn dbo dbr dbs ddb ddd dde ddl ddn ddo ddr dds de- deb ded dee del den deo der des dl- dlb dld dle dll dlo dlr dls dnb dnd dne dnl dnn dno dnr dns dob dod doe dol don doo dor dos drb drd dre drl drn dro drr drs dsb dsd dse dsl dsn dso dsr dss ebb ebd ebe ebl ebn ebo ebr ebs ed- edb edd ede edl edn edo edr eds eeb eed eee eel een eeo eer ees elb eld ele ell eln elo elr els en- enb end ene enl enn eno enr ens eo- eob eod eoe eol eon eoo eor eos erb erd ere erl ern ero err ers es- esb esd ese esl esn eso esr ess lbb lbd lbe lbl lbo lbr lbs ldb ldd lde ldl ldn ldo ldr lds leb led lee lel len leo ler les llb lld lle lll lln llo llr lls lnb lnd lne lnl lnn lno lnr lns lob lod loe lol lon loo lor los lrb lrd lrn lro lrr lrs lsb lsd lse lsl lsn lso lsr lss nbb nbd nbe nbl nbn nbo nbr nbs ndb ndd nde ndl ndn ndo ndr nds ne- neb ned nee nel nen neo ner nes nlb nld nle nll nln nlo nlr nls nnb nne nnl nnn nno nns no- nob nod noe nol non noo nor nos nrb nrd nre nrl nrn nro nrr nrs nsb nsd nse nsl nsn nso nsr nss ob- obb obd obe obl obn obo obr obs odb odd ode odl odn odo odr ods oeb oed oee oel oen oeo oer oes olb old ole oll oln olo ols on- onb ond one onl onn ono onr ons oo- oob ood ool oon ooo oor oos or- orb ord ore orl orn oro orr ors os- osb osd ose osl osn oso osr oss rbb rbd rbe rbl rbn rbo rbr rbs rdb rdd rde rdl rdn rdo rdr rds re- reb red ree rel ren reo rer res rld rle rll rln rlo rlr rls rnb rnd rnn rno rnr rns rob rod roe rol ron roo ror ros rrb rrd rrl rrn rrr rrs rsb rsd rse rsl rsn rso rsr rss sbb sbd sbe sbl sbn sbo sbr sbs sdb sdd sde sdl sdn sdo sdr sds se- seb sed see sel sen seo ser ses slb sld sle sll sln slo slr sls snb snd sne snl snn sno snr sns sob sod soe sol son soo sor sos sr- srb srd sre srl srn sro srr srs ss- ssb ssd sse ssl ssn sso ssr sss