-ic bbb bbc bbd bbi bbr bbs bby bcb bcc bcd bci bcr bcs bcy bdb bdc bdd bdi bdr bds bdy bi- bib bic bid bii bir bis biy brb brd bri brr brs bry bsb bsc bsd bsi bsr bss bsy by- byc byd byi byr bys c-- cbb cbc cbd cbi cbr cbs cby ccb ccc ccd cci ccr ccs cdb cdc cdd cdi cdr cds cdy ci- cib cic cid cii cir cis crb crc crd cri crr crs cry csb csc csd csi csr css csy cyb cyc cyd cyr cys dbb dbc dbd dbi dbr dbs dby dcb dcc dcd dci dcr dcs ddb ddc ddd ddi ddr dds ddy di- dib dic did dii dir dis diy drb drc drd dri drr drs dry dsb dsc dsd dsi dsr dss dsy dy- dyb dyc dyd dyr dys dyy i-d ibb ibc ibd ibi ibr ibs iby icb icc icd ici icr ics icy idb idc idd idi idr ids idy iib iic iid iii iir iis ir- irb irc ird iri irr irs iry is- isb isc isd isi isr iss isy iyc iyr iys iyy rbb rbc rbd rbi rbr rbs rcb rcc rcd rci rcr rcs rdb rdc rdd rdi rdr rds rdy rib ric rid rii rir ris riy rrb rrc rrd rri rrr rrs rsb rsc rsd rsi rsr rss ry- ryc ryd ryr rys ryy sbb sbc sbd sbi sbr sbs sby scb scc scd sci scr scs sdb sdc sdd sdi sdr sds sdy sib sic sid sii sir sis sr- srb src srd sri srr srs sry ss- ssb ssc ssd ssi ssr sss sy- syb syc syd syi syr sys ybc ybi ybr ybs yby ycc ycd yci ycs ycy yds ydy yid yii yir yis yrc yrs ysb ysc ysi ysr yss ysy yyb yyc yys yyy