-er -ol b-u bbb bbe bbf bbl bbo bbr bbt bbu bbw be- beb bee bef bel beo ber bet beu bew bfb bfe bff bfl bfo bfr bft bfu blb ble blf bll blo blr blt blu bob boe bof bol boo bor bot bou bow brb bre brf brl bro brr brt bru brw btb bte btf btl bto btr btt btu btw bub bue buf bul buo bur but buu buw bwb bwf bwl bwo bwr bwu ebb ebe ebf ebl ebo ebr ebt ebu ebw eeb eee eef eel eeo eer eet eew ef- efb efe eff efl efo efr eft efw elb ele elf ell elo elr elt elu elw eo- eob eoe eof eol eoo eor eot eou eow erb ere erf erl ero err ert eru erw etb ete etf etl eto etr ett etu etw eu- eub eue euf eul eur eut ewb ewe ewf ewl ewo ewr ewt ewu eww fbb fbe fbf fbl fbo fbr fbt fbu fbw feb fee fef fel feo fer fet feu few ffe fff ffl ffo ffr fft ffu ffw flb fle flf fll flo flr flt flu flw fob foe fof fol foo for fot fou fow frb fre frf frl fro frr frt fru frw ftb fte ftf ftl fto ftr ftt ftu ftw fub fue fuf ful fuo fur fut fuu fwb fwe fwf fwl fwo fwt lbb lbe lbf lbl lbo lbr lbt lbu lbw leb lee lef lel leo ler let leu lew lfb lfe lff lfl lfo lfr lft lfu llb lle llf lll llo llr llt llu llw lob loe lof lol loo lor lot lou low lrb lrf lro lrr lrt lru lrw ltb lte ltf ltl lto ltr ltt ltu lub lue luf lul luo lur lut luu lwb lwl lwo lwr lww ob- obb obe obf obl obo obr obt obu obw oeb oee oef oel oeo oer oet of- ofb ofe off ofl ofo ofr oft ofu ofw olb ole olf oll olo olt olu olw oo- oob oof ool ooo oor oot oow or- orb ore orf orl oro orr ort oru ot- otb ote otf otl oto otr ott otu otw ou- oue ouf oul ouo our out owb owe owf owl owo owt owu oww rbb rbe rbf rbl rbo rbr rbt rbu rbw re- reb ree ref rel reo rer ret reu rew rfb rfe rff rfl rfo rfr rft rfu rfw rle rlf rll rlo rlr rlt rlu rlw rob roe rof rol roo ror rot rou row rrb rrf rrl rrr rrt rru rtb rte rtf rtl rto rtr rtt rtu rtw rub rue ruf ruo rur rut ruu rwb rwe rwf rwl rwr rwu tbb tbe tbf tbl tbo tbr tbt tbu te- teb tee tef tel teo ter tet teu tew tfb tfe tff tfl tfo tfr tft tfu tfw tle tlf tll tlo tlr tlt tlu tlw to- tob toe tof tol too tor tot tou tow trb tre trf trl tro trr trt tru trw ttb tte ttf ttl tto ttr ttt ttu ttw tub tue tuf tul tuo tur tut tuu twb twe twf twl two twr twt twu tww ubb ube ubf ubl ubo ubr ubt ubu ubw ueb uee uef uel uer uet uew ufe uff ufl ufo ufr uft ufu ufw ulb ule ulf ull ulo ulr ult ulu uob uoe uol uoo uor uot uow ur- urb ure urf url uro urr urt uru urw utb ute utf utl uto utr utt utu uue uur uut uuu uwb uwe uwf uwl uwr uww wbb wbe wbf wbo wbr wbt wbw web wee wef wel weo wer wet wew wfb wfe wff wfl wfo wfr wft wfu wfw wl- wlb wle wlf wll wlo wlr wlt wlu wlw wob woe wof wol woo wor wot wou wow wr- wre wrf wrl wro wrr wrt wru wrw wtb wtf wto wtr wtt wtu wtw wub wue wuo wur wut wwe wwf wwl wwo wwt wwu www