-er -th b-u bbb bbc bbe bbg bbh bbl bbr bbs bbt bbu bcb bcc bce bcg bch bcl bcr bcs bct bcu be- beb bec bee beg beh bel ber bes bet beu bgb bgc bge bgg bgh bgl bgr bgs bgt bgu bhb bhc bhe bhg bhh bhl bhr bhs bht bhu blb blc ble blg blh bll blr bls blt blu brb bre brg brh brl brr brs brt bru bsb bsc bse bsg bsh bsl bsr bss bst bsu btb btc bte btg bth btl btr bts btt btu bub buc bue bug buh bul bur bus but buu c-- cbb cbc cbe cbg cbh cbl cbr cbs cbt cbu ccb ccc cce ccg cch ccl ccr ccs cct ccu ce- ceb cec cee ceg ceh cel cer ces cet ceu cgb cgc cge cgg cgh cgl cgr cgs cgt cgu ch- chb chc che chg chh chl chr chs cht chu cl- clb clc cle clg clh cll clr cls clt clu crb crc cre crg crh crl crr crs crt cru csb csc cse csg csh csl csr css cst csu ctb ctc cte ctg cth ctl ctr cts ctt ctu cub cuc cue cug cuh cul cur cus cut cuu ebb ebc ebe ebg ebh ebl ebr ebs ebt ebu ec- ecb ecc ece ecg ech ecl ecr ecs ect ecu eeb eec eee eeg eel eer ees eet egb egc ege egg egh egl egr egs egt egu ehb ehc ehe ehg ehh ehl ehr ehs eht ehu elb elc ele elg elh ell elr els elt elu erb erc ere erg erh erl err ers ert eru es- esb esc ese esg esh esl esr ess est esu etb etc ete etg eth etl etr ets ett etu eu- eub euc eue eug eul eur eus eut gbc gbe gbg gbh gbl gbr gbs gbt gbu gcb gcc gce gcg gch gcl gcr gcs gct gcu ge- geb gec gee geg geh gel ger ges get geu ggb ggc ggg ggh ggr ggs ggt ggu ghb ghc ghe ghg ghh ghl ghr ghs ght glb glc gle glg glh gll glr gls glt glu grb grc gre grg grh grl grr grs grt gru gsb gsc gse gsg gsl gsr gss gst gsu gtb gtc gte gtg gth gtl gtr gts gtt gtu gu- gub guc gue gug gul gur gus gut guu hbb hbc hbe hbg hbh hbl hbr hbs hbt hbu hcb hcc hce hcg hch hcl hcr hcs hct he- heb hec hee heg heh hel her hes het heu hgb hgc hge hgg hgh hgl hgr hgs hgt hgu hhb hhc hhe hhg hhh hhl hhr hhs hht hhu hlb hlc hle hlg hlh hll hlr hls hlt hlu hr- hrb hrc hre hrg hrh hrl hrr hrs hrt hru hsb hsc hse hsg hsh hsl hsr hss hst hsu htb htc hte htg hth htl htr hts htt hub huc hue hug huh hul hur hus hut huu lbb lbc lbe lbg lbh lbl lbr lbs lbt lbu lcb lcc lce lcg lch lcl lcr lcs lct lcu leb lec lee leg leh lel ler les let leu lgb lgc lge lgg lgh lgl lgr lgs lgt lgu lhb lhc lhh lhr lhs lht lhu llb llc lle llg lll llr lls llt llu lrb lrc lrg lrh lrr lrs lrt lru lsb lsc lse lsg lsh lsl lsr lss lst lsu ltb ltc lte ltg lth ltl ltr lts ltt ltu lub luc lue lug luh lul lur lus lut luu rbb rbc rbe rbg rbh rbl rbr rbs rbt rbu rcb rcc rce rcg rch rcl rcr rcs rct rcu re- reb rec ree reg reh rel rer res ret reu rgb rgc rge rgg rgh rgr rgs rgt rh- rhb rhc rhe rhg rhh rhl rhr rhs rht rhu rlc rle rlg rlh rll rlr rls rlt rlu rrb rrc rrg rrh rrl rrr rrs rrt rru rsb rsc rse rsg rsh rsl rsr rss rst rsu rtb rtc rte rtg rtl rtr rts rtt rtu rub ruc rue rug ruh rur rus rut ruu sbb sbc sbe sbg sbh sbl sbr sbs sbt sbu scb scc sce scg sch scl scr scs sct scu se- seb sec see seg seh sel ser ses set seu sgb sgc sge sgg sgh sgl sgr sgs sgt sgu sh- shb shc she shg shh shl shr shs sht shu slb slc sle slg slh sll slr sls slt slu sr- srb src sre srg srh srl srr srs srt ss- ssb ssc sse ssg ssh ssl ssr sss sst ssu stb stc ste stg sth stl str sts stt stu sub suc sue sug suh sul sur sus sut suu tbb tbc tbe tbg tbh tbl tbr tbs tbt tbu tcb tcc tce tcg tch tcl tcr tcs tct tcu te- teb tec tee teg teh tel ter tes tet teu tgb tgc tge tgg tgh tgl tgr tgs tgt tgu th- thb thc the thg thh thl thr ths tht thu tlc tle tlg tlh tll tlr tls tlt tlu trb trc tre trg trh trl trr trs trt tru tsb tsc tse tsg tsh tsl tsr tss tst tsu ttb ttc tte ttg tth ttl ttr tts ttt ttu tub tuc tue tug tuh tul tur tus tut tuu ubb ubc ube ubg ubh ubl ubr ubs ubt ubu ucb ucc uce ucg uch ucl ucr ucs uct ucu ueb uec uee ueg ueh uel uer ues uet ugb ugc uge ugg ugh ugl ugr ugs ugt ugu uhb uhc uhe uhh uhl uhr uhs uht uhu ulb ulc ule ulg ull ulr uls ult ulu ur- urb urc ure urg url urr urs urt uru usb usc use usg ush usl usr uss ust usu utb utc ute uth utl utr uts utt utu uuc uue uug uur uus uut uuu