-er -ol -th b-u bbb bbc bbe bbf bbg bbh bbl bbo bbr bbs bbt bbu bcb bcc bce bcf bcg bch bcl bco bcr bcs bct bcu be- beb bec bee bef beg beh bel beo ber bes bet beu bfb bfc bfe bff bfg bfh bfl bfo bfr bfs bft bfu bgb bgc bge bgf bgg bgh bgl bgo bgr bgs bgt bgu bhb bhc bhe bhf bhg bhh bhl bho bhr bhs bht bhu blb blc ble blf blg blh bll blo blr bls blt blu bob boc boe bof bog boh bol boo bor bos bot bou brb bre brf brg brh brl bro brr brs brt bru bsb bsc bse bsf bsg bsh bsl bso bsr bss bst bsu btb btc bte btf btg bth btl bto btr bts btt btu bub buc bue buf bug buh bul buo bur bus but buu c-- cbb cbc cbe cbf cbg cbh cbl cbo cbr cbs cbt cbu ccb ccc cce ccf ccg cch ccl cco ccr ccs cct ccu ce- ceb cec cee cef ceg ceh cel ceo cer ces cet ceu cfb cfc cfe cff cfg cfh cfl cfo cfr cfs cft cfu cgb cgc cge cgg cgh cgl cgo cgr cgs cgt cgu ch- chb chc che chf chg chh chl cho chr chs cht chu cl- clb clc cle clf clg clh cll clo clr cls clt clu co- cob coc coe cof cog coh col coo cor cos cot cou crb crc cre crf crg crh crl cro crr crs crt cru csb csc cse csf csg csh csl cso csr css cst csu ctb ctc cte ctf ctg cth ctl cto ctr cts ctt ctu cub cuc cue cuf cug cuh cul cuo cur cus cut cuu ebb ebc ebe ebf ebg ebh ebl ebo ebr ebs ebt ebu ec- ecb ecc ece ecf ecg ech ecl eco ecr ecs ect ecu eeb eec eee eef eeg eel eeo eer ees eet ef- efb efc efe eff efg efh efl efo efr efs eft egb egc ege egf egg egh egl ego egr egs egt egu ehb ehc ehe ehf ehg ehh ehl eho ehr ehs eht ehu elb elc ele elf elg elh ell elo elr els elt elu eo- eob eoc eoe eof eog eoh eol eoo eor eos eot eou erb erc ere erf erg erh erl ero err ers ert eru es- esb esc ese esf esg esh esl eso esr ess est esu etb etc ete etf etg eth etl eto etr ets ett etu eu- eub euc eue euf eug eul eur eus eut fbb fbc fbe fbf fbg fbh fbl fbo fbr fbs fbt fbu fcb fcc fce fcf fcg fcl fco fcr fcs fct fcu feb fec fee fef feg feh fel feo fer fes fet feu ffc ffe fff ffg ffh ffl ffo ffr ffs fft ffu fgb fgc fge fgf fgg fgh fgl fgr fgs fgt fhb fhc fhe fhf fhg fhh fhl fho fhr fhs flb flc fle flf flg fll flo flr fls flt flu fob foc foe fof fog foh fol foo for fos fot fou frb frc fre frf frg frh frl fro frr frs frt fru fsb fsc fse fsf fsg fsh fsl fso fsr fss fst fsu ftb ftc fte ftf ftg fth ftl fto ftr fts ftt ftu fub fue fuf fug ful fuo fur fus fut fuu gbc gbe gbf gbg gbh gbl gbo gbr gbs gbt gbu gcb gcc gce gcf gcg gch gcl gco gcr gcs gct gcu ge- geb gec gee gef geg geh gel geo ger ges get geu gfb gfc gfe gff gfh gfl gfo gfr gfs gft ggb ggc ggg ggh ggo ggr ggs ggt ggu ghb ghc ghe ghg ghh ghl gho ghr ghs ght glb glc gle glf glg glh gll glo glr gls glt glu gob goc goe gof gog goh gol goo gor gos got gou grb grc gre grf grg grh grl gro grr grs grt gru gsb gsc gse gsf gsg gsl gso gsr gss gst gsu gtb gtc gte gtf gtg gth gtl gto gtr gts gtt gtu gu- gub guc gue guf gug gul guo gur gus gut guu hbb hbc hbe hbf hbg hbh hbl hbo hbr hbs hbt hbu hcb hcc hce hcf hcg hch hcl hco hcr hcs hct he- heb hec hee hef heg heh hel heo her hes het heu hfb hfc hfe hff hfg hfh hfl hfo hfr hfs hft hfu hgb hgc hge hgf hgg hgh hgl hgo hgr hgs hgt hgu hhb hhc hhe hhf hhg hhh hhl hho hhr hhs hht hhu hlb hlc hle hlf hlg hlh hll hlo hlr hls hlt hlu hob hoc hoe hof hog hoh hol hoo hor hos hot hou hr- hrb hrc hre hrf hrg hrh hrl hro hrr hrs hrt hru hsb hsc hse hsf hsg hsh hsl hsr hss hst hsu htb htc hte htf htg hth htl hto htr hts htt hub huc hue huf hug huh hul huo hur hus hut huu lbb lbc lbe lbf lbg lbh lbl lbo lbr lbs lbt lbu lcb lcc lce lcf lcg lch lcl lco lcr lcs lct lcu leb lec lee lef leg leh lel leo ler les let leu lfb lfc lfe lff lfg lfh lfl lfo lfr lfs lft lfu lgb lgc lge lgf lgg lgh lgl lgo lgr lgs lgt lgu lhb lhc lhf lhh lho lhr lhs lht lhu llb llc lle llf llg lll llo llr lls llt llu lob loc loe lof log loh lol loo lor los lot lou lrb lrc lrf lrg lrh lro lrr lrs lrt lru lsb lsc lse lsf lsg lsh lsl lso lsr lss lst lsu ltb ltc lte ltf ltg lth ltl lto ltr lts ltt ltu lub luc lue luf lug luh lul luo lur lus lut luu ob- obb obc obe obf obg obh obl obo