b-u bbb bbd bbh bbi bbr bbs bbu bdb bdd bdh bdi bdr bds bdu bhb bhd bhh bhi bhr bhs bhu bi- bib bid bih bii bir bis biu brb brd brh bri brr brs bru bsb bsd bsh bsi bsr bss bsu bub bud buh bui bur bus buu dbb dbd dbh dbi dbr dbs dbu ddb ddd ddh ddi ddr dds ddu dh- dhb dhd dhh dhi dhr dhs dhu di- dib did dih dii dir dis diu drb drd dri drr drs dru dsb dsd dsh dsi dsr dss dsu dub dud duh dui dur dus h-i hbb hbd hbh hbi hbr hbs hbu hdb hdd hdh hdi hdr hds hdu hhb hhd hhh hhi hhr hhs hhu hib hid hih hii hir his hiu hr- hrb hrd hrh hri hrr hrs hru hsb hsd hsh hsi hsr hss hsu hub hud huh hui hur hus huu i-d ibb ibd ibh ibi ibr ibs ibu idb idd idh idi idr ids idu ihb ihd ihh ihi ihr ihs ihu iib iid iih iii iir iis iiu ir- irb ird iri irr irs iru is- isb isd ish isi isr iss isu iu- iub iud iui iur ius rbb rbd rbh rbi rbr rbs rbu rdb rdd rdh rdi rdr rds rdu rh- rhb rhd rhh rhi rhr rhs rhu rib rid rih rii rir ris rrb rrd rrh rri rrr rrs rru rsb rsd rsh rsi rsr rss rsu rub rud ruh rui rur rus ruu sbb sbd sbh sbi sbr sbs sbu sdb sdd sdh sdi sdr sds sdu sh- shb shd shh shi shr shs shu sib sid sih sii sir sis siu sr- srb srd srh sri srr srs ss- ssb ssd ssh ssi ssr sss ssu sub sud suh sui sur sus suu ubb ubh ubi ubr ubs ubu udb udd udi udr uds udu uhb uhd uhh uhi uhr uhs uhu uib uid uii uir uis uiu ur- urb urd uri urr urs uru usb usd ush usi usr uss usu uur uus uuu