-er -th bbb bbc bbe bbh bbl bbr bbs bbt bcb bcc bce bch bcl bcr bcs bct be- beb bec bee beh bel ber bes bet bhb bhc bhe bhh bhl bhr bhs bht blb blc ble blh bll blr bls blt brb bre brh brl brr brs brt bsb bsc bse bsh bsl bsr bss bst btb btc bte bth btl btr bts btt c-- cbb cbc cbe cbh cbl cbr cbs cbt ccb ccc cce cch ccl ccr ccs cct ce- ceb cec cee ceh cel cer ces cet ch- chb chc che chh chl chr chs cht cl- clb clc cle clh cll clr cls clt crb crc cre crh crl crr crs crt csb csc cse csh csl csr css cst ctb ctc cte cth ctl ctr cts ctt ebb ebc ebe ebh ebl ebr ebs ebt ec- ecb ecc ece ech ecl ecr ecs ect eeb eec eee eel eer ees eet ehb ehc ehe ehh ehl ehr ehs eht elb elc ele elh ell elr els elt erb erc ere erh erl err ers ert es- esb esc ese esh esl esr ess est etb etc ete eth etl etr ets ett hbb hbc hbe hbh hbl hbr hbs hbt hcb hcc hce hch hcl hcr hcs hct he- heb hec hee heh hel her hes het hhb hhc hhe hhh hhl hhr hhs hht hlb hlc hle hlh hll hlr hls hlt hr- hrb hrc hre hrh hrl hrr hrs hrt hsb hsc hse hsh hsl hsr hss hst htb htc hte hth htl htr hts htt lbb lbc lbe lbh lbl lbr lbs lbt lcb lcc lce lch lcl lcr lcs lct leb lec lee leh lel ler les let lhb lhc lhh lhr lhs lht llb llc lle lll llr lls llt lrb lrc lrh lrr lrs lrt lsb lsc lse lsh lsl lsr lss lst ltb ltc lte lth ltl ltr lts ltt rbb rbc rbe rbh rbl rbr rbs rbt rcb rcc rce rch rcl rcr rcs rct re- reb rec ree reh rel rer res ret rh- rhb rhc rhe rhh rhl rhr rhs rht rlc rle rlh rll rlr rls rlt rrb rrc rrh rrl rrr rrs rrt rsb rsc rse rsh rsl rsr rss rst rtb rtc rte rtl rtr rts rtt sbb sbc sbe sbh sbl sbr sbs sbt scb scc sce sch scl scr scs sct se- seb sec see seh sel ser ses set sh- shb shc she shh shl shr shs sht slb slc sle slh sll slr sls slt sr- srb src sre srh srl srr srs srt ss- ssb ssc sse ssh ssl ssr sss sst stb stc ste sth stl str sts stt tbb tbc tbe tbh tbl tbr tbs tbt tcb tcc tce tch tcl tcr tcs tct te- teb tec tee teh tel ter tes tet th- thb thc the thh thl thr ths tht tlc tle tlh tll tlr tls tlt trb trc tre trh trl trr trs trt tsb tsc tse tsh tsl tsr tss tst ttb ttc tte tth ttl ttr tts ttt