-er -ol b-p bbb bbe bbg bbk bbl bbo bbp bbr bbs be- beb bee beg bek bel beo bep ber bes bgb bge bgg bgk bgl bgo bgp bgr bgs bkb bke bkg bkk bkl bko bkp bkr bks blb ble blg blk bll blo blp blr bls bob boe bog bok bol boo bop bor bos bpb bpe bpg bpl bpo bpp bpr bps brb bre brg brk brl bro brp brr brs bsb bse bsg bsk bsl bso bsp bsr bss ebb ebe ebg ebk ebl ebo ebp ebr ebs eeb eee eeg eek eel eeo eep eer ees egb ege egg egl ego egp egr egs ekb eke ekg ekl eko ekp ekr eks elb ele elg elk ell elo elp elr els eo- eob eoe eog eok eol eoo eop eor eos ep- epb epe epg epl epo epp epr eps erb ere erg erk erl ero erp err ers es- esb ese esg esk esl eso esp esr ess g-p gbe gbg gbk gbl gbo gbp gbr gbs ge- geb gee geg gek gel geo gep ger ges ggb ggg ggo ggp ggr ggs gkb gko gkp gks glb gle glg glk gll glo glp glr gls gob goe gog gok gol goo gop gor gos gpb gpe gpg gpk gpl gpo gpp gpr gps grb gre grg grk grl gro grp grr grs gsb gse gsg gsk gsl gso gsp gsr gss kbb kbe kbk kbl kbo kbp kbr kbs ke- keb kee keg kek kel keo kep ker kes kgb kgl kgo kgp kgs kkb kke kkk kkl kkp kkr kks kl- klb klg klo klr kls kob koe kog kok kol koo kop kor kos kpe kpk kpl kpo kpp kpr kps krg krk krl kro krp krr krs ksb kse ksg ksk ksl kso ksp ksr kss l-p lbb lbe lbg lbk lbl lbo lbp lbr lbs leb lee leg lek lel leo lep ler les lgb lge lgg lgk lgl lgo lgp lgr lgs lkb lkg lkl lkp lkr lks llb lle llg llk lll llo llp llr lls lob loe log lok lol loo lop lor los lpb lpe lpg lpk lpl lpo lpp lpr lps lrb lrg lrk lro lrp lrr lrs lsb lse lsg lsk lsl lso lsp lsr lss ob- obb obe obg obk obl obo obp obr obs oeb oee oeg oel oeo oep oer oes oge ogg ogl ogo ogp ogs okb oke okg okk okl oko okp okr oks olb ole olg olk oll olo olp ols oo- oob oog ook ool ooo oop oor oos op- opb ope opg opk opl opo opp opr ops or- orb ore org ork orl oro orp orr ors os- osb ose osg osk osl oso osp osr oss p-p pbb pbe pbg pbk pbl pbo pbp pbr pbs peb pee peg pek pel peo pep per pes pgb pge pgg pgk pgl pgo pgp pgr pgs pkb pke pkg pkl pko pkp pkr pks plb ple plg plk pll plo plp plr pls pob poe pog pok pol poo pop por pos ppb ppe ppg ppk ppl ppo ppp ppr pps prb pre prg prk prl pro prp prr prs ps- psb pse psg psk psl pso psp psr pss rbb rbe rbg rbk rbl rbo rbp rbr rbs re- reb ree reg rek rel reo rep rer res rgb rge rgg rgk rgo rgp rgr rgs rkb rke rkg rkk rko rkp rks rle rlg rll rlo rlp rlr rls rob roe rog rok rol roo rop ror ros rpb rpe rpg rpk rpl rpo rpp rpr rps rrb rrg rrk rrl rrp rrr rrs rsb rse rsg rsk rsl rso rsp rsr rss sbb sbe sbg sbk sbl sbo sbp sbr sbs se- seb see seg sek sel seo sep ser ses sgb sge sgg sgk sgl sgo sgp sgr sgs sk- skb ske skg skk skl sko skp skr sks slb sle slg slk sll slo slp slr sls sob soe sog sok sol soo sop sor sos spb spe spg spk spl spo spp spr sps sr- srb sre srg srk srl sro srp srr srs ss- ssb sse ssg ssk ssl sso ssp ssr sss