-th b-p bbb bbc bbh bbo bbp bbr bbs bbt bcb bcc bch bco bcp bcr bcs bct bhb bhc bhh bho bhp bhr bhs bht bob boc boh boo bop bor bos bot bpb bpc bph bpo bpp bpr bps bpt brb brh bro brp brr brs brt bsb bsc bsh bso bsp bsr bss bst btb btc bth bto btp btr bts btt c-- cbb cbc cbh cbo cbp cbr cbs cbt ccb ccc cch cco ccp ccr ccs cct ch- chb chc chh cho chp chr chs cht co- cob coc coh coo cop cor cos cot cpb cpc cph cpo cpp cpr cps cpt crb crc crh cro crp crr crs crt csb csc csh cso csp csr css cst ctb ctc cth cto ctp ctr cts ctt hbb hbc hbh hbo hbp hbr hbs hbt hcb hcc hch hco hcp hcr hcs hct hhb hhc hhh hho hhp hhr hhs hht hob hoc hoh hoo hop hor hos hot hpb hpc hph hpo hpp hpr hps hpt hr- hrb hrc hrh hro hrp hrr hrs hrt hsb hsc hsh hsp hsr hss hst htb htc hth hto htp htr hts htt ob- obb obc obh obo obp obr obs obt oc- ocb occ och oco ocp ocr ocs oct ohc ohh oho ohp ohr ohs oht oo- oob ooc ooh ooo oop oor oos oot op- opb opc oph opo opp opr ops opt or- orb orc orh oro orp orr ors ort os- osb osc osh oso osp osr oss ost ot- otb otc oth oto otp otr ots ott p-p pbb pbc pbo pbp pbr pbs pbt pcb pcc pch pco pcp pcr pcs pct phb phc pho php phr phs pht pob poc poh poo pop por pos pot ppb ppc pph ppo ppp ppr pps ppt prb prc prh pro prp prr prs prt ps- psb psc psh pso psp psr pss pst pt- ptb ptc pth pto ptp ptr pts ptt rbb rbc rbh rbo rbp rbr rbs rbt rcb rcc rch rco rcp rcr rcs rct rh- rhb rhc rhh rho rhp rhr rhs rht rob roc roh roo rop ror ros rot rpb rpc rph rpo rpp rpr rps rpt rrb rrc rrh rrp rrr rrs rrt rsb rsc rsh rso rsp rsr rss rst rtb rtc rto rtp rtr rts rtt sbb sbc sbh sbo sbp sbr sbs sbt scb scc sch sco scp scr scs sct sh- shb shc shh sho shp shr shs sht sob soc soh soo sop sor sos sot spb spc sph spo spp spr sps spt sr- srb src srh sro srp srr srs srt ss- ssb ssc ssh sso ssp ssr sss sst stb stc sth sto stp str sts stt tbb tbc tbh tbo tbp tbr tbs tbt tcb tcc tch tco tcp tcr tcs tct th- thb thc thh tho thp thr ths tht to- tob toc toh too top tor tos tot tpb tpc tph tpo tpp tpr tps tpt trb trc trh tro trp trr trs trt tsb tsc tsh tso tsp tsr tss tst ttb ttc tth tto ttp ttr tts ttt