bbb bbh bbi bbr bbs bhb bhh bhi bhr bhs bi- bib bih bii bir bis brb brh bri brr brs bsb bsh bsi bsr bss h-i hbb hbh hbi hbr hbs hhb hhh hhi hhr hhs hib hih hii hir his hr- hrb hrh hri hrr hrs hsb hsh hsi hsr hss ibb ibh ibi ibr ibs ihb ihh ihi ihr ihs iib iih iii iir iis ir- irb iri irr irs is- isb ish isi isr iss rbb rbh rbi rbr rbs rh- rhb rhh rhi rhr rhs rib rih rii rir ris rrb rrh rri rrr rrs rsb rsh rsi rsr rss sbb sbh sbi sbr sbs sh- shb shh shi shr shs sib sih sii sir sis sr- srb srh sri srr srs ss- ssb ssh ssi ssr sss