-er -th b-p bbb bbc bbe bbh bbn bbp bbr bbs bbt bcb bcc bce bch bcn bcp bcr bcs bct be- beb bec bee beh ben bep ber bes bet bhb bhc bhe bhh bhp bhr bhs bht bnb bnc bne bnn bnp bnr bns bnt bpb bpc bpe bph bpn bpp bpr bps bpt brb bre brh brn brp brr brs brt bsb bsc bse bsh bsn bsp bsr bss bst btb btc bte bth btn btp btr bts btt c-- cbb cbc cbe cbh cbn cbp cbr cbs cbt ccb ccc cce cch ccn ccp ccr ccs cct ce- ceb cec cee ceh cen cep cer ces cet ch- chb chc che chh chn chp chr chs cht cn- cnb cnc cne cnh cnn cnp cnr cns cnt cpb cpc cpe cph cpn cpp cpr cps cpt crb crc cre crh crn crp crr crs crt csb csc cse csh csn csp csr css cst ctb ctc cte cth ctn ctp ctr cts ctt ebb ebc ebe ebh ebn ebp ebr ebs ebt ec- ecb ecc ece ech ecn ecr ecs ect eeb eec eee een eep eer ees eet ehb ehc ehe ehh ehn ehp ehr ehs eht en- enb enc ene enh enn enp enr ens ent ep- epb epc epe eph epn epp epr eps ept erb erc ere erh ern erp err ers ert es- esb esc ese esh esn esp esr ess est etb etc ete eth etn etp etr ets ett hbb hbc hbe hbh hbn hbp hbr hbs hbt hcb hcc hce hch hcn hcp hcr hcs hct he- heb hec hee heh hen hep her hes het hhb hhc hhe hhh hhn hhp hhr hhs hht hnb hnc hne hnh hnn hns hnt hpb hpc hpe hph hpn hpp hpr hps hpt hr- hrb hrc hre hrh hrn hrp hrr hrs hrt hsb hsc hse hsh hsn hsp hsr hss hst htb htc hte hth htn htp htr hts htt nbb nbc nbe nbn nbp nbr nbs nbt ncb ncc nce nch ncn ncp ncr ncs nct ne- neb nec nee neh nen nep ner nes net nhb nhc nhe nhh nhn nhp nhr nhs nht nnb nnc nne nnh nnn nnp nns nnt npb npc npe nph npn npp npr nps npt nrb nrc nre nrn nrp nrr nrs nrt nsb nsc nse nsh nsn nsp nsr nss nst ntb ntc nte nth ntn ntp ntr nts ntt p-p pbb pbc pbe pbn pbp pbr pbs pbt pcb pcc pce pch pcn pcp pcr pcs pct peb pec pee peh pen pep per pes pet phb phc phe phn php phr phs pht pn- pnb pnc pne pnh pnn pnp pnr pns pnt ppb ppc ppe pph ppn ppp ppr pps ppt prb prc pre prh prn prp prr prs prt ps- psb psc pse psh psn psp psr pss pst pt- ptb ptc pte pth ptn ptp ptr pts ptt rbb rbc rbe rbh rbn rbp rbr rbs rbt rcb rcc rce rch rcn rcp rcr rcs rct re- reb rec ree reh ren rep rer res ret rh- rhb rhc rhe rhh rhn rhp rhr rhs rht rnb rnc rnh rnn rnp rnr rns rnt rpb rpc rpe rph rpn rpp rpr rps rpt rrb rrc rrh rrn rrp rrr rrs rrt rsb rsc rse rsh rsn rsp rsr rss rst rtb rtc rte rtn rtp rtr rts rtt sbb sbc sbe sbh sbn sbp sbr sbs sbt scb scc sce sch scn scp scr scs sct se- seb sec see seh sen sep ser ses set sh- shb shc she shh shn shp shr shs sht snb snc sne snn snp snr sns snt spb spc spe sph spn spp spr sps spt sr- srb src sre srh srn srp srr srs srt ss- ssb ssc sse ssh ssn ssp ssr sss sst stb stc ste sth stn stp str sts stt tbb tbc tbe tbh tbn tbp tbr tbs tbt tcb tcc tce tch tcn tcp tcr tcs tct te- teb tec tee teh ten tep ter tes tet th- thb thc the thh thn thp thr ths tht tnb tnc tne tnh tnn tnp tnr tns tnt tpb tpc tpe tph tpn tpp tpr tps tpt trb trc tre trh trn trp trr trs trt tsb tsc tse tsh tsn tsp tsr tss tst ttb ttc tte tth ttn ttp ttr tts ttt