-er -ic -th bbb bbc bbe bbh bbi bbk bbr bbs bbt bcb bcc bce bch bci bck bcr bcs bct be- beb bec bee beh bei bek ber bes bet bhb bhc bhe bhh bhi bhk bhr bhs bht bi- bib bic bie bih bii bik bir bis bit bkb bkc bke bkk bkr bks bkt brb bre brh bri brk brr brs brt bsb bsc bse bsh bsi bsk bsr bss bst btb btc bte bth bti btk btr bts btt c-- cbb cbc cbe cbh cbi cbk cbr cbs cbt ccb ccc cce cch cci cck ccr ccs cct ce- ceb cec cee ceh cei cek cer ces cet ch- chb chc che chh chi chk chr chs cht ci- cib cic cie cih cii cik cir cis cit ckb ckc ckh cki cks ckt crb crc cre crh cri crk crr crs crt csb csc cse csh csi csk csr css cst ctb ctc cte cth cti ctk ctr cts ctt ebb ebc ebe ebh ebi ebk ebr ebs ebt ec- ecb ecc ece ech eci eck ecr ecs ect eeb eec eee eek eer ees eet ehb ehc ehe ehh ehi ehr ehs eht eib eic eie eii eik eir eis eit ekb ekc eke ekh eki ekr eks ekt erb erc ere erh eri erk err ers ert es- esb esc ese esh esi esk esr ess est etb etc ete eth eti etk etr ets ett h-i hbb hbc hbe hbh hbi hbk hbr hbs hbt hcb hcc hce hch hci hck hcr hcs hct he- heb hec hee heh hei hek her hes het hhb hhc hhe hhh hhi hhk hhr hhs hht hib hic hie hih hii hik hir his hit hkb hkh hki hkk hkr hks hkt hr- hrb hrc hre hrh hri hrk hrr hrs hrt hsb hsc hse hsh hsi hsk hsr hss hst htb htc hte hth hti htk htr hts htt ibb ibc ibe ibh ibi ibk ibr ibs ibt icb icc ice ich ici ick icr ics ict ie- iec iee iei iek ier ies iet ihb ihc ihe ihh ihi ihk ihr ihs iht iib iic iie iih iii iir iis iit ikb ikc ike iki ikk ikr iks ikt ir- irb irc ire iri irk irr irs irt is- isb isc ise ish isi isk isr iss ist itb itc ite ith iti itk its itt k-t kbb kbc kbe kbh kbi kbk kbr kbs kcb kcc kce kch kci kck kcr kcs kct ke- keb kec kee keh kei kek ker kes ket khe khh khi khk khr khs kib kic kie kih kii kik kir kis kit kkb kkc kke kkh kki kkk kkr kks kkt krc kri krk krr krs krt ksb ksc kse ksh ksi ksk ksr kss kst ktb ktc kte kth ktk ktr kts ktt rbb rbc rbe rbh rbi rbk rbr rbs rbt rcb rcc rce rch rci rcr rcs rct re- reb rec ree reh rei rek rer res ret rh- rhb rhc rhe rhh rhi rhr rhs rht rib ric rie rih rii rik rir ris rit rkb rkc rke rkk rks rkt rrb rrc rrh rri rrk rrr rrs rrt rsb rsc rse rsh rsi rsk rsr rss rst rtb rtc rte rti rtk rtr rts rtt sbb sbc sbe sbh sbi sbk sbr sbs sbt scb scc sce sch sci sck scr scs sct se- seb sec see seh sei sek ser ses set sh- shb shc she shh shi shk shr shs sht sib sic sie sih sii sik sir sis sit sk- skb skc ske skh ski skk skr sks skt sr- srb src sre srh sri srk srr srs srt ss- ssb ssc sse ssh ssi ssk ssr sss sst stb stc ste sth sti stk str sts stt tbb tbc tbe tbh tbi tbk tbr tbs tbt tcb tcc tce tch tci tck tcr tcs tct te- teb tec tee teh tei tek ter tes tet th- thb thc the thh thi thk thr ths tht tib tic tie tih tii tik tir tis tit tkb tkc tke tkk tkr tks tkt trb trc tre trh tri trk trr trs trt tsb tsc tse tsh tsi tsk tsr tss tst ttb ttc tte tth tti ttk ttr tts ttt