-er -ol -up b-p b-u bbb bbe bbf bbl bbo bbp bbr bbs bbu be- beb bee bef bel beo bep ber bes beu bfb bfe bff bfl bfo bfp bfr bfs bfu blb ble blf bll blo blp blr bls blu bob boe bof bol boo bop bor bos bou bpb bpe bpf bpl bpo bpp bpr bps bpu brb bre brf brl bro brp brr brs bru bsb bse bsf bsl bso bsp bsr bss bsu bub bue buf bul buo bup bur bus buu ebb ebe ebf ebl ebo ebp ebr ebs ebu eeb eee eef eel eeo eep eer ees ef- efb efe eff efl efo efp efr efs elb ele elf ell elo elp elr els elu eo- eob eoe eof eol eoo eop eor eos eou ep- epb epe epf epl epo epp epr eps epu erb ere erf erl ero erp err ers eru es- esb ese esf esl eso esp esr ess esu eu- eub eue euf eul eup eur eus fbb fbe fbf fbl fbo fbp fbr fbs fbu feb fee fef fel feo fep fer fes feu ffe fff ffl ffo ffp ffr ffs ffu flb fle flf fll flo flp flr fls flu fob foe fof fol foo fop for fos fou fpb fpe fpl fpo fpp fpr fps fpu frb fre frf frl fro frp frr frs fru fsb fse fsf fsl fso fsp fsr fss fsu fub fue fuf ful fuo fup fur fus fuu l-p lbb lbe lbf lbl lbo lbp lbr lbs lbu leb lee lef lel leo lep ler les leu lfb lfe lff lfl lfo lfp lfr lfs lfu llb lle llf lll llo llp llr lls llu lob loe lof lol loo lop lor los lou lpb lpe lpf lpl lpo lpp lpr lps lpu lrb lrf lro lrp lrr lrs lru lsb lse lsf lsl lso lsp lsr lss lsu lub lue luf lul luo lup lur lus luu ob- obb obe obf obl obo obp obr obs obu oeb oee oef oel oeo oep oer oes of- ofb ofe off ofl ofo ofp ofr ofs ofu olb ole olf oll olo olp ols olu oo- oob oof ool ooo oop oor oos op- opb ope opf opl opo opp opr ops or- orb ore orf orl oro orp orr ors oru os- osb ose osf osl oso osp osr oss osu ou- oue ouf oul ouo oup our ous p-p pbb pbe pbf pbl pbo pbp pbr pbs pbu peb pee pef pel peo pep per pes peu pfb pfe pff pfl pfo pfp pfr pfs pfu plb ple plf pll plo plp plr pls plu pob poe pof pol poo pop por pos pou ppb ppe ppf ppl ppo ppp ppr pps ppu prb pre prf prl pro prp prr prs pru ps- psb pse psf psl pso psp psr pss psu pub pue puf pul pup pur pus puu rbb rbe rbf rbl rbo rbp rbr rbs rbu re- reb ree ref rel reo rep rer res reu rfb rfe rff rfl rfo rfp rfr rfs rfu rle rlf rll rlo rlp rlr rls rlu rob roe rof rol roo rop ror ros rou rpb rpe rpf rpl rpo rpp rpr rps rpu rrb rrf rrl rrp rrr rrs rru rsb rse rsf rsl rso rsp rsr rss rsu rub rue ruf ruo rup rur rus ruu sbb sbe sbf sbl sbo sbp sbr sbs sbu se- seb see sef sel seo sep ser ses seu sfb sfe sff sfl sfo sfp sfr sfs sfu slb sle slf sll slo slp slr sls slu sob soe sof sol soo sop sor sos sou spb spe spf spl spo spp spr sps spu sr- srb sre srf srl sro srp srr srs ss- ssb sse ssf ssl sso ssp ssr sss ssu sub sue suf sul suo sup sur sus suu ubb ube ubf ubl ubo ubp ubr ubs ubu ueb uee uef uel uep uer ues ufe uff ufl ufo ufp ufr ufs ufu ulb ule ulf ull ulo ulp ulr uls ulu uob uoe uol uoo uop uor uos up- upb upe upf upo upp upr ups upu ur- urb ure urf url uro urp urr urs uru usb use usf usl uso usp usr uss usu uue uur uus uuu