-er -ol -up b-p b-u bbb bbe bbf bbl bbo bbp bbr bbu be- beb bee bef bel beo bep ber beu bfb bfe bff bfl bfo bfp bfr bfu blb ble blf bll blo blp blr blu bob boe bof bol boo bop bor bou bpb bpe bpf bpl bpo bpp bpr bpu brb bre brf brl bro brp brr bru bub bue buf bul buo bup bur buu ebb ebe ebf ebl ebo ebp ebr ebu eeb eee eef eel eeo eep eer ef- efb efe eff efl efo efp efr elb ele elf ell elo elp elr elu eo- eob eoe eof eol eoo eop eor eou ep- epb epe epf epl epo epp epr epu erb ere erf erl ero erp err eru eu- eub eue euf eul eup eur fbb fbe fbf fbl fbo fbp fbr fbu feb fee fef fel feo fep fer feu ffe fff ffl ffo ffp ffr ffu flb fle flf fll flo flp flr flu fob foe fof fol foo fop for fou fpb fpe fpl fpo fpp fpr fpu frb fre frf frl fro frp frr fru fub fue fuf ful fuo fup fur fuu l-p lbb lbe lbf lbl lbo lbp lbr lbu leb lee lef lel leo lep ler leu lfb lfe lff lfl lfo lfp lfr lfu llb lle llf lll llo llp llr llu lob loe lof lol loo lop lor lou lpb lpe lpf lpl lpo lpp lpr lpu lrb lrf lro lrp lrr lru lub lue luf lul luo lup lur luu ob- obb obe obf obl obo obp obr obu oeb oee oef oel oeo oep oer of- ofb ofe off ofl ofo ofp ofr ofu olb ole olf oll olo olp olu oo- oob oof ool ooo oop oor op- opb ope opf opl opo opp opr or- orb ore orf orl oro orp orr oru ou- oue ouf oul ouo oup our p-p pbb pbe pbf pbl pbo pbp pbr pbu peb pee pef pel peo pep per peu pfb pfe pff pfl pfo pfp pfr pfu plb ple plf pll plo plp plr plu pob poe pof pol poo pop por pou ppb ppe ppf ppl ppo ppp ppr ppu prb pre prf prl pro prp prr pru pub pue puf pul pup pur puu rbb rbe rbf rbl rbo rbp rbr rbu re- reb ree ref rel reo rep rer reu rfb rfe rff rfl rfo rfp rfr rfu rle rlf rll rlo rlp rlr rlu rob roe rof rol roo rop ror rou rpb rpe rpf rpl rpo rpp rpr rpu rrb rrf rrl rrp rrr rru rub rue ruf ruo rup rur ruu ubb ube ubf ubl ubo ubp ubr ubu ueb uee uef uel uep uer ufe uff ufl ufo ufp ufr ufu ulb ule ulf ull ulo ulp ulr ulu uob uoe uol uoo uop uor up- upb upe upf upo upp upr upu ur- urb ure urf url uro urp urr uru uue uur uuu

bbbb bbeb bblb bbpr bebb bebe bebo beeb beef beel beep beer befe beff befo bele bell belo belp belu beo- beof beor bepo bere bero berr beru beur bffl bfpo bfpp bleb blee bleo bleu blob bloo blop blou blub blue bluf blup blur bobb bobe bobo bobu boee boef boel boeo boep boer bofe boff bofu bole boll bolo bolu boob booe boof bool boop boor bope bopp bor- bore borf boro borr boru boue bouf boul boup bour bpel bpfl bpoe breb bree bref brel breo brep brer brfu brlp brob broe brol broo bror brou brrr brue brup bubb bube bubo bubu buel buer bueu bufe buff bufo bufr bulb bule bull bulu buol bur- burb bure burl buro burp burr buru ebbo ebbr ebel eber eboe ebol eboo ebor ebpo ebro ebru ebul ebur eeee eefe eefl eele eero efbr efeo efor el-b el-p elbe elbo elbu elee elef eleo eler elfe elle ello ellu elpe elro elue elul eole eolo eore eorl epee eper eple epll epol epor eppo eppp eprb epro eprp epub erbb erbe ereb erel erer erle erll erob eroe erol eroo erpe erre erro erub erur euer eule eur- eure euro fble fbop febo feeb feel feer fefe feff fefo fele felf fell felo feof ferb fere fero ferr feru ffee ffff ffrr flee fler flob floe floo flop flor flou flub flue fluf fluo flur foer fofo fole foll folo folr foof fool fopp for- forb fore forl foro forr foul foup four fprf free freo frep frob froe frol frop frou frub frue fubb fubu fuel fuff fufu fule full fulu fuor fur- fure furl furo furr lblr le-u lebo lebu leef leel leep leer lefe leff lele lell lelo lelu leof leor leou lepe lepo lepp lere lero lerp leur llef lleu llll lloo lob- lobb lobe lobo loeb loeu lofe loff lole loll lolo loob looe loof lool loop loor lope lopp lopu lore loro loue loul loup lour louu lpfp lppl lprp lrpu lrrr lube luef luer lufe luff lufu lule lull lulu lupe lupo lupu lure luup o-eo obbo obel ober oble oblu oboe obol obor obre obro oele oere oeuf ofer off- offe offo offr offu ofor ofre olbo ole- olef oleo oler olfe olle ollo olof olor olpe olur oobe ooer ooff oolo oooo oore opel opep oper ople opo- opor oppo orbb orbe orbo orbu ore- oreb orel oreo orer orfe orff orfu orle orlo orlu oro- oroe orof oror orpe orro orub orup ouer oufe ouff oule oulu oupe our- oure ouro ouu- pblu pbrf pebl peel peep peer peff pel- pelb pele pelf pell pelo pelu peor peou pepe pepo per- pere perf perl pero perp perr peru peul peur pfff pffr plbr ple- pleb plee pleo pleu plff plob ploo plop plou plpp plue plup plur pobo poel poer poff pole poll polo polu poof pool poop poor pop- pope popo popp porb pore poro porr