-er -ic -th b-p bbb bbc bbe bbh bbi bbp bbr bbs bbt bcb bcc bce bch bci bcp bcr bcs bct be- beb bec bee beh bei bep ber bes bet bhb bhc bhe bhh bhi bhp bhr bhs bht bi- bib bic bie bih bii bip bir bis bit bpb bpc bpe bph bpi bpp bpr bps bpt brb bre brh bri brp brr brs brt bsb bsc bse bsh bsi bsp bsr bss bst btb btc bte bth bti btp btr bts btt c-- cbb cbc cbe cbh cbi cbp cbr cbs cbt ccb ccc cce cch cci ccp ccr ccs cct ce- ceb cec cee ceh cei cep cer ces cet ch- chb chc che chh chi chp chr chs cht ci- cib cic cie cih cii cip cir cis cit cpb cpc cpe cph cpi cpp cpr cps cpt crb crc cre crh cri crp crr crs crt csb csc cse csh csi csp csr css cst ctb ctc cte cth cti ctp ctr cts ctt ebb ebc ebe ebh ebi ebp ebr ebs ebt ec- ecb ecc ece ech eci ecr ecs ect eeb eec eee eep eer ees eet ehb ehc ehe ehh ehi ehp ehr ehs eht eib eic eie eii eip eir eis eit ep- epb epc epe eph epi epp epr eps ept erb erc ere erh eri erp err ers ert es- esb esc ese esh esi esp esr ess est etb etc ete eth eti etp etr ets ett h-i hbb hbc hbe hbh hbi hbp hbr hbs hbt hcb hcc hce hch hci hcp hcr hcs hct he- heb hec hee heh hei hep her hes het hhb hhc hhe hhh hhi hhp hhr hhs hht hib hic hie hih hii hip hir his hit hpb hpc hpe hph hpi hpp hpr hps hpt hr- hrb hrc hre hrh hri hrp hrr hrs hrt hsb hsc hse hsh hsi hsp hsr hss hst htb htc hte hth hti htp htr hts htt ibb ibc ibe ibh ibi ibp ibr ibs ibt icb icc ice ich ici icp icr ics ict ie- iec iee iei iep ier ies iet ihb ihc ihe ihh ihi ihp ihr ihs iht iib iic iie iih iii iip iir iis iit ipb ipc ipe ipi ipp ipr ips ipt ir- irb irc ire iri irp irr irs irt is- isb isc ise ish isi isp isr iss ist itb itc ite ith iti itp its itt p-p pbb pbc pbe pbi pbp pbr pbs pbt pcb pcc pce pch pci pcp pcr pcs pct peb pec pee peh pei pep per pes pet phb phc phe phi php phr phs pht pib pic pie pih pii pip pir pis pit ppb ppc ppe pph ppi ppp ppr pps ppt prb prc pre prh pri prp prr prs prt ps- psb psc pse psh psi psp psr pss pst pt- ptb ptc pte pth pti ptp ptr pts ptt rbb rbc rbe rbh rbi rbp rbr rbs rbt rcb rcc rce rch rci rcp rcr rcs rct re- reb rec ree reh rei rep rer res ret rh- rhb rhc rhe rhh rhi rhp rhr rhs rht rib ric rie rih rii rip rir ris rit rpb rpc rpe rph rpi rpp rpr rps rpt rrb rrc rrh rri rrp rrr rrs rrt rsb rsc rse rsh rsi rsp rsr rss rst rtb rtc rte rti rtp rtr rts rtt sbb sbc sbe sbh sbi sbp sbr sbs sbt scb scc sce sch sci scp scr scs sct se- seb sec see seh sei sep ser ses set sh- shb shc she shh shi shp shr shs sht sib sic sie sih sii sip sir sis sit spb spc spe sph spi spp spr sps spt sr- srb src sre srh sri srp srr srs srt ss- ssb ssc sse ssh ssi ssp ssr sss sst stb stc ste sth sti stp str sts stt tbb tbc tbe tbh tbi tbp tbr tbs tbt tcb tcc tce tch tci tcp tcr tcs tct te- teb tec tee teh tei tep ter tes tet th- thb thc the thh thi thp thr ths tht tib tic tie tih tii tip tir tis tit tpb tpc tpe tph tpi tpp tpr tps tpt trb trc tre trh tri trp trr trs trt tsb tsc tse tsh tsi tsp tsr tss tst ttb ttc tte tth tti ttp ttr tts ttt