-er -ol b-u bbb bbd bbe bbg bbl bbo bbr bbs bbu bdb bdd bde bdg bdl bdo bdr bds bdu be- beb bed bee beg bel beo ber bes beu bgb bgd bge bgg bgl bgo bgr bgs bgu blb bld ble blg bll blo blr bls blu bob bod boe bog bol boo bor bos bou brb brd bre brg brl bro brr brs bru bsb bsd bse bsg bsl bso bsr bss bsu bub bud bue bug bul buo bur bus buu dbb dbd dbe dbg dbl dbo dbr dbs dbu ddb ddd dde ddg ddl ddo ddr dds ddu de- deb ded dee deg del deo der des deu dgd dge dgg dgl dgr dgs dgu dl- dlb dld dle dlg dll dlo dlr dls dlu dob dod doe dog dol doo dor dos dou drb drd dre drg drl dro drr drs dru dsb dsd dse dsg dsl dso dsr dss dsu dub dud due dug dul duo dur dus ebb ebd ebe ebg ebl ebo ebr ebs ebu ed- edb edd ede edg edl edo edr eds edu eeb eed eee eeg eel eeo eer ees egb egd ege egg egl ego egr egs egu elb eld ele elg ell elo elr els elu eo- eob eod eoe eog eol eoo eor eos eou erb erd ere erg erl ero err ers eru es- esb esd ese esg esl eso esr ess esu eu- eub eud eue eug eul eur eus g-d gbd gbe gbg gbl gbo gbr gbs gbu gdb gdd gde gdl gdo gdr gds gdu ge- geb ged gee geg gel geo ger ges geu ggb ggd ggg ggo ggr ggs ggu glb gld gle glg gll glo glr gls glu gob god goe gog gol goo gor gos gou grb grd gre grg grl gro grr grs gru gsb gsd gse gsg gsl gso gsr gss gsu gu- gub gud gue gug gul guo gur gus guu lbb lbd lbe lbg lbl lbo lbr lbs lbu ldb ldd lde ldg ldl ldo ldr lds ldu leb led lee leg lel leo ler les leu lgb lgd lge lgg lgl lgo lgr lgs lgu llb lld lle llg lll llo llr lls llu lob lod loe log lol loo lor los lou lrb lrd lrg lro lrr lrs lru lsb lsd lse lsg lsl lso lsr lss lsu lub lud lue lug lul luo lur lus luu ob- obb obd obe obg obl obo obr obs obu odb odd ode odg odl odo odr ods odu oeb oed oee oeg oel oeo oer oes ogd oge ogg ogl ogo ogs olb old ole olg oll olo ols olu oo- oob ood oog ool ooo oor oos or- orb ord ore org orl oro orr ors oru os- osb osd ose osg osl oso osr oss osu ou- oud oue oul ouo our ous rbb rbd rbe rbg rbl rbo rbr rbs rbu rdb rdd rde rdg rdl rdo rdr rds rdu re- reb red ree reg rel reo rer res reu rgb rgd rge rgg rgo rgr rgs rld rle rlg rll rlo rlr rls rlu rob rod roe rog rol roo ror ros rou rrb rrd rrg rrl rrr rrs rru rsb rsd rse rsg rsl rso rsr rss rsu rub rud rue rug ruo rur rus ruu sbb sbd sbe sbg sbl sbo sbr sbs sbu sdb sdd sde sdg sdl sdo sdr sds sdu se- seb sed see seg sel seo ser ses seu sgb sgd sge sgg sgl sgo sgr sgs sgu slb sld sle slg sll slo slr sls slu sob sod soe sog sol soo sor sos sou sr- srb srd sre srg srl sro srr srs ss- ssb ssd sse ssg ssl sso ssr sss ssu sub sud sue sug sul suo sur sus suu ubb ube ubg ubl ubo ubr ubs ubu udb udd ude udg udl udo udr uds udu ueb ued uee ueg uel uer ues ugb uge ugg ugl ugo ugr ugs ugu ulb uld ule ulg ull ulo ulr uls ulu uob uod uoe uog uol uoo uor uos ur- urb urd ure urg url uro urr urs uru usb usd use usg usl uso usr uss usu uue uug uur uus uuu