b-p bbb bbh bbi bbo bbp bbr bbs bhb bhh bhi bho bhp bhr bhs bi- bib bih bii bio bip bir bis bob boh boi boo bop bor bos bpb bph bpi bpo bpp bpr bps brb brh bri bro brp brr brs bsb bsh bsi bso bsp bsr bss h-i hbb hbh hbi hbo hbp hbr hbs hhb hhh hhi hho hhp hhr hhs hib hih hii hio hip hir his hob hoh hoi hoo hop hor hos hpb hph hpi hpo hpp hpr hps hr- hrb hrh hri hro hrp hrr hrs hsb hsh hsi hsp hsr hss ibb ibh ibi ibo ibp ibr ibs ihb ihh ihi iho ihp ihr ihs iib iih iii iio iip iir iis io- iob ioh ioi ioo iop ior ios ipb ipi ipo ipp ipr ips ir- irb iri iro irp irr irs is- isb ish isi iso isp isr iss o-i ob- obb obh obi obo obp obr obs ohh ohi oho ohp ohr ohs oib oii oio oip oir ois oo- oob ooh ooi ooo oop oor oos op- opb oph opi opo opp opr ops or- orb orh ori oro orp orr ors os- osb osh osi oso osp osr oss p-p pbb pbi pbo pbp pbr pbs phb phi pho php phr phs pib pih pii pio pip pir pis pob poh poi poo pop por pos ppb pph ppi ppo ppp ppr pps prb prh pri pro prp prr prs ps- psb psh psi pso psp psr pss rbb rbh rbi rbo rbp rbr rbs rh- rhb rhh rhi rho rhp rhr rhs rib rih rii rio rip rir ris rob roh roi roo rop ror ros rpb rph rpi rpo rpp rpr rps rrb rrh rri rrp rrr rrs rsb rsh rsi rso rsp rsr rss sbb sbh sbi sbo sbp sbr sbs sh- shb shh shi sho shp shr shs sib sih sii sio sip sir sis sob soh soi soo sop sor sos spb sph spi spo spp spr sps sr- srb srh sri sro srp srr srs ss- ssb ssh ssi sso ssp ssr sss