-ic bbb bbc bbh bbi bbs bby bcb bcc bch bci bcs bcy bhb bhc bhh bhi bhs bi- bib bic bih bii bis biy bsb bsc bsh bsi bss bsy by- byc byh byi bys c-- cbb cbc cbh cbi cbs cby ccb ccc cch cci ccs ch- chb chc chh chi chs chy ci- cib cic cih cii cis csb csc csh csi css csy cyb cyc cys h-i hbb hbc hbh hbi hbs hby hcb hcc hch hci hcs hcy hhb hhc hhh hhi hhs hhy hib hic hih hii his hsb hsc hsh hsi hss hsy hy- hyb hyc hyh hyi hys hyy ibb ibc ibh ibi ibs iby icb icc ich ici ics icy ihb ihc ihh ihi ihs ihy iib iic iih iii iis is- isb isc ish isi iss isy iyc iys iyy sbb sbc sbh sbi sbs sby scb scc sch sci scs sh- shb shc shh shi shs shy sib sic sih sii sis ss- ssb ssc ssh ssi sss sy- syb syc syh syi sys ybc ybi ybs yby ycc ych yci ycs ycy yhc yhi yhs yih yii yis ysb ysc ysi yss ysy yyb yyc yys yyy