b-p bbb bbi bbp bbs bi- bib bii bip bis bpb bpi bpp bps bsb bsi bsp bss ibb ibi ibp ibs iib iii iip iis ipb ipi ipp ips is- isb isi isp iss p-p pbb pbi pbp pbs pib pii pip pis ppb ppi ppp pps ps- psb psi psp pss sbb sbi sbp sbs sib sii sip sis spb spi spp sps ss- ssb ssi ssp sss

bbbb bbbs bibb bibi bibs biis bipp bips bis- bisp biss bspp ibis ibss iiii iiis iisi iisp ipsi ipsp ipss isis isps issi issp isss pbsp pibb pibi piip pipi pipp pips pisi piss ppib pppp ppps ppss psip psis pspi pspp psps s-ib s-ii sbbs sbsi sbsp sibi sibs sipi sipp sips sisi siss spip spis spps spsp spss ssis ssps sssb sssi ssss

bibbs bibis bipib bpips iiiii ipsi- is-is isisi piisi pipis pippi pissi s-iii sippi sipsi sisis sissi spiss sssss

bbbbbb pipipi pipisb pippip pissis pppppp ppsspp siiiii sisisi

bbbbbbb bissibi pip-pip ssipsis sssssss

bbbbbbbb i-ii-iii

issisisis

pip-pip-pip

bbbbbbbbbbbbbbb

iiiiiiiiiiiiiiiis