bbb bbd bbi bbl bbr bbs bdb bdd bdi bdl bdr bds bi- bib bid bii bil bir bis blb bld bli bll blr bls brb brd bri brl brr brs bsb bsd bsi bsl bsr bss dbb dbd dbi dbl dbr dbs ddb ddd ddi ddl ddr dds di- dib did dii dil dir dis dl- dlb dld dli dll dlr dls drb drd dri drl drr drs dsb dsd dsi dsl dsr dss i-d ibb ibd ibi ibl ibr ibs idb idd idi idl idr ids iib iid iii iil iir iis il- ilb ild ili ill ilr ils ir- irb ird iri irl irr irs is- isb isd isi isl isr iss lbb lbd lbi lbl lbr lbs ldb ldd ldi ldl ldr lds lib lid lii lil lir lis llb lld lli lll llr lls lrb lrd lri lrr lrs lsb lsd lsi lsl lsr lss rbb rbd rbi rbl rbr rbs rdb rdd rdi rdl rdr rds rib rid rii ril rir ris rld rli rll rlr rls rrb rrd rri rrl rrr rrs rsb rsd rsi rsl rsr rss sbb sbd sbi sbl sbr sbs sdb sdd sdi sdl sdr sds sib sid sii sil sir sis slb sld sli sll slr sls sr- srb srd sri srl srr srs ss- ssb ssd ssi ssl ssr sss