-er -ol b-u bbb bbd bbe bbl bbn bbo bbr bbs bbu bdb bdd bde bdl bdo bdr bds bdu be- beb bed bee bel ben beo ber bes beu blb bld ble bll bln blo blr bls blu bnb bnd bne bnl bnn bno bnr bns bnu bob bod boe bol bon boo bor bos bou brb brd bre brl brn bro brr brs bru bsb bsd bse bsl bsn bso bsr bss bsu bub bud bue bul bun buo bur bus buu dbb dbd dbe dbl dbn dbo dbr dbs dbu ddb ddd dde ddl ddn ddo ddr dds ddu de- deb ded dee del den deo der des deu dl- dlb dld dle dll dlo dlr dls dlu dnb dnd dne dnl dnn dno dnr dns dob dod doe dol don doo dor dos dou drb drd dre drl drn dro drr drs dru dsb dsd dse dsl dsn dso dsr dss dsu dub dud due dul dun duo dur dus ebb ebd ebe ebl ebn ebo ebr ebs ebu ed- edb edd ede edl edn edo edr eds edu eeb eed eee eel een eeo eer ees elb eld ele ell eln elo elr els elu en- enb end ene enl enn eno enr ens enu eo- eob eod eoe eol eon eoo eor eos eou erb erd ere erl ern ero err ers eru es- esb esd ese esl esn eso esr ess esu eu- eub eud eue eul eun eur eus lbb lbd lbe lbl lbo lbr lbs lbu ldb ldd lde ldl ldn ldo ldr lds ldu leb led lee lel len leo ler les leu llb lld lle lll lln llo llr lls llu lnb lnd lne lnl lnn lno lnr lns lnu lob lod loe lol lon loo lor los lou lrb lrd lrn lro lrr lrs lru lsb lsd lse lsl lsn lso lsr lss lsu lub lud lue lul lun luo lur lus luu nbb nbd nbe nbl nbn nbo nbr nbs nbu ndb ndd nde ndl ndn ndo ndr nds ndu ne- neb ned nee nel nen neo ner nes neu nlb nld nle nll nln nlo nlr nls nlu nnb nne nnl nnn nno nns nnu no- nob nod noe nol non noo nor nos nou nrb nrd nre nrl nrn nro nrr nrs nru nsb nsd nse nsl nsn nso nsr nss nsu nub nud nue nul nun nuo nur nus nuu ob- obb obd obe obl obn obo obr obs obu odb odd ode odl odn odo odr ods odu oeb oed oee oel oen oeo oer oes olb old ole oll oln olo ols olu on- onb ond one onl onn ono onr ons onu oo- oob ood ool oon ooo oor oos or- orb ord ore orl orn oro orr ors oru os- osb osd ose osl osn oso osr oss osu ou- oud oue oul oun ouo our ous rbb rbd rbe rbl rbn rbo rbr rbs rbu rdb rdd rde rdl rdn rdo rdr rds rdu re- reb red ree rel ren reo rer res reu rld rle rll rln rlo rlr rls rlu rnb rnd rnn rno rnr rns rnu rob rod roe rol ron roo ror ros rou rrb rrd rrl rrn rrr rrs rru rsb rsd rse rsl rsn rso rsr rss rsu rub rud rue run ruo rur rus ruu sbb sbd sbe sbl sbn sbo sbr sbs sbu sdb sdd sde sdl sdn sdo sdr sds sdu se- seb sed see sel sen seo ser ses seu slb sld sle sll sln slo slr sls slu snb snd sne snl snn sno snr sns snu sob sod soe sol son soo sor sos sou sr- srb srd sre srl srn sro srr srs ss- ssb ssd sse ssl ssn sso ssr sss ssu sub sud sue sul sun suo sur sus suu ubb ube ubl ubn ubo ubr ubs ubu udb udd ude udl udn udo udr uds udu ueb ued uee uel uen uer ues ulb uld ule ull uln ulo ulr uls ulu un- unb und une unl unn uno unr uns unu uob uod uoe uol uon uoo uor uos ur- urb urd ure url urn uro urr urs uru usb usd use usl usn uso usr uss usu uue uun uur uus uuu