-er -ic -th bbb bbc bbe bbh bbi bbr bbs bbt bcb bcc bce bch bci bcr bcs bct be- beb bec bee beh bei ber bes bet bhb bhc bhe bhh bhi bhr bhs bht bi- bib bic bie bih bii bir bis bit brb bre brh bri brr brs brt bsb bsc bse bsh bsi bsr bss bst btb btc bte bth bti btr bts btt c-- cbb cbc cbe cbh cbi cbr cbs cbt ccb ccc cce cch cci ccr ccs cct ce- ceb cec cee ceh cei cer ces cet ch- chb chc che chh chi chr chs cht ci- cib cic cie cih cii cir cis cit crb crc cre crh cri crr crs crt csb csc cse csh csi csr css cst ctb ctc cte cth cti ctr cts ctt ebb ebc ebe ebh ebi ebr ebs ebt ec- ecb ecc ece ech eci ecr ecs ect eeb eec eee eer ees eet ehb ehc ehe ehh ehi ehr ehs eht eib eic eie eii eir eis eit erb erc ere erh eri err ers ert es- esb esc ese esh esi esr ess est etb etc ete eth eti etr ets ett h-i hbb hbc hbe hbh hbi hbr hbs hbt hcb hcc hce hch hci hcr hcs hct he- heb hec hee heh hei her hes het hhb hhc hhe hhh hhi hhr hhs hht hib hic hie hih hii hir his hit hr- hrb hrc hre hrh hri hrr hrs hrt hsb hsc hse hsh hsi hsr hss hst htb htc hte hth hti htr hts htt ibb ibc ibe ibh ibi ibr ibs ibt icb icc ice ich ici icr ics ict ie- iec iee iei ier ies iet ihb ihc ihe ihh ihi ihr ihs iht iib iic iie iih iii iir iis iit ir- irb irc ire iri irr irs irt is- isb isc ise ish isi isr iss ist itb itc ite ith iti its itt rbb rbc rbe rbh rbi rbr rbs rbt rcb rcc rce rch rci rcr rcs rct re- reb rec ree reh rei rer res ret rh- rhb rhc rhe rhh rhi rhr rhs rht rib ric rie rih rii rir ris rit rrb rrc rrh rri rrr rrs rrt rsb rsc rse rsh rsi rsr rss rst rtb rtc rte rti rtr rts rtt sbb sbc sbe sbh sbi sbr sbs sbt scb scc sce sch sci scr scs sct se- seb sec see seh sei ser ses set sh- shb shc she shh shi shr shs sht sib sic sie sih sii sir sis sit sr- srb src sre srh sri srr srs srt ss- ssb ssc sse ssh ssi ssr sss sst stb stc ste sth sti str sts stt tbb tbc tbe tbh tbi tbr tbs tbt tcb tcc tce tch tci tcr tcs tct te- teb tec tee teh tei ter tes tet th- thb thc the thh thi thr ths tht tib tic tie tih tii tir tis tit trb trc tre trh tri trr trs trt tsb tsc tse tsh tsi tsr tss tst ttb ttc tte tth tti ttr tts ttt