-ey -ic bbb bbc bbe bbi bbs bby bcb bcc bce bci bcs bcy be- beb bec bee bei bes bey bi- bib bic bie bii bis biy bsb bsc bse bsi bss bsy by- byc bye byi bys c-- cbb cbc cbe cbi cbs cby ccb ccc cce cci ccs ce- ceb cec cee cei ces cey ci- cib cic cie cii cis csb csc cse csi css csy cyb cyc cye cys ebb ebc ebe ebi ebs eby ec- ecb ecc ece eci ecs eeb eec eee ees eey eib eic eie eii eis es- esb esc ese esi ess esy eyc eye eys ibb ibc ibe ibi ibs iby icb icc ice ici ics icy ie- iec iee iei ies iey iib iic iie iii iis is- isb isc ise isi iss isy iyc iye iys iyy sbb sbc sbe sbi sbs sby scb scc sce sci scs se- seb sec see sei ses sey sib sic sie sii sis ss- ssb ssc sse ssi sss sy- syb syc sye syi sys ybc ybe ybi ybs yby ycc yce yci ycs ycy yeb yec yee yei yes yey yie yii yis ysb ysc yse ysi yss ysy yyb yyc yye yys yyy