-ic b-p bbb bbc bbh bbi bbo bbp bbr bbs bcb bcc bch bci bco bcp bcr bcs bhb bhc bhh bhi bho bhp bhr bhs bi- bib bic bih bii bio bip bir bis bob boc boh boi boo bop bor bos bpb bpc bph bpi bpo bpp bpr bps brb brh bri bro brp brr brs bsb bsc bsh bsi bso bsp bsr bss c-- cbb cbc cbh cbi cbo cbp cbr cbs ccb ccc cch cci cco ccp ccr ccs ch- chb chc chh chi cho chp chr chs ci- cib cic cih cii cio cip cir cis co- cob coc coh coi coo cop cor cos cpb cpc cph cpi cpo cpp cpr cps crb crc crh cri cro crp crr crs csb csc csh csi cso csp csr css h-i hbb hbc hbh hbi hbo hbp hbr hbs hcb hcc hch hci hco hcp hcr hcs hhb hhc hhh hhi hho hhp hhr hhs hib hic hih hii hio hip hir his hob hoc hoh hoi hoo hop hor hos hpb hpc hph hpi hpo hpp hpr hps hr- hrb hrc hrh hri hro hrp hrr hrs hsb hsc hsh hsi hsp hsr hss ibb ibc ibh ibi ibo ibp ibr ibs icb icc ich ici ico icp icr ics ihb ihc ihh ihi iho ihp ihr ihs iib iic iih iii iio iip iir iis io- iob ioc ioh ioi ioo iop ior ios ipb ipc ipi ipo ipp ipr ips ir- irb irc iri iro irp irr irs is- isb isc ish isi iso isp isr iss o-i ob- obb obc obh obi obo obp obr obs oc- ocb occ och oci oco ocp ocr ocs ohc ohh ohi oho ohp ohr ohs oib oic oii oio oip oir ois oo- oob ooc ooh ooi ooo oop oor oos op- opb opc oph opi opo opp opr ops or- orb orc orh ori oro orp orr ors os- osb osc osh osi oso osp osr oss p-p pbb pbc pbi pbo pbp pbr pbs pcb pcc pch pci pco pcp pcr pcs phb phc phi pho php phr phs pib pic pih pii pio pip pir pis pob poc poh poi poo pop por pos ppb ppc pph ppi ppo ppp ppr pps prb prc prh pri pro prp prr prs ps- psb psc psh psi pso psp psr pss rbb rbc rbh rbi rbo rbp rbr rbs rcb rcc rch rci rco rcp rcr rcs rh- rhb rhc rhh rhi rho rhp rhr rhs rib ric rih rii rio rip rir ris rob roc roh roi roo rop ror ros rpb rpc rph rpi rpo rpp rpr rps rrb rrc rrh rri rrp rrr rrs rsb rsc rsh rsi rso rsp rsr rss sbb sbc sbh sbi sbo sbp sbr sbs scb scc sch sci sco scp scr scs sh- shb shc shh shi sho shp shr shs sib sic sih sii sio sip sir sis sob soc soh soi soo sop sor sos spb spc sph spi spo spp spr sps sr- srb src srh sri sro srp srr srs ss- ssb ssc ssh ssi sso ssp ssr sss