bbb bbi bbr bbs bi- bib bii bir bis brb bri brr brs bsb bsi bsr bss ibb ibi ibr ibs iib iii iir iis ir- irb iri irr irs is- isb isi isr iss rbb rbi rbr rbs rib rii rir ris rrb rri rrr rrs rsb rsi rsr rss sbb sbi sbr sbs sib sii sir sis sr- srb sri srr srs ss- ssb ssi ssr sss

bbbb bbbs bibb bibi bibs biis birb biri birr birs bis- biss bris brrr brrs brsb brsr ibis ibri ibss iiii iiis iirs iisi iisr iri- iris irri irrs isis isri issi issr isss rbbb rbbr rbbs rbis rbss rib- riis riri rirs risi riss rrrr rsbi rsis s-ib s-ii sbbs sbsi sibi sibs siri sirr sirs sisi siss srib sris ssbr ssis ssri ssrs sssb sssi ssss

bibbs bibis bibri birrs brisb brisi briss brrrr iiiii iiris iisir irbis iris- iriss irssi is-is isisi isrib ribbi s-iii sibir siris sirsi sisis sissi sssrb sssss

bbbbbb bibiri biribi bribir bribri ribbis ribisi sbirri siiiii siriri sirris sirsir sisisi

bbbbbbb bissibi bissiri sssssss

bbbbbbbb i-ii-iii

issisisis

bbbbbbbbbbbbbbb

iiiiiiiiiiiiiiiis