-ey -ic c-- ccc ccd cce cci ccp ccs cdc cdd cde cdi cdp cds cdy ce- cec ced cee cei cep ces cey ci- cic cid cie cii cip cis cpc cpd cpe cpi cpp cps csc csd cse csi csp css csy cyc cyd cye cyp cys dcc dcd dce dci dcp dcs ddc ddd dde ddi ddp dds ddy de- dec ded dee dei dep des dey di- dic did die dii dip dis diy dpc dpd dpe dpi dpp dps dsc dsd dse dsi dsp dss dsy dy- dyc dyd dye dyp dys dyy ec- ecc ecd ece eci ecs ed- edc edd ede edi edp eds edy eec eed eee eep ees eey eic eid eie eii eip eis ep- epc epd epe epi epp eps es- esc esd ese esi esp ess esy eyc eyd eye eyp eys i-d icc icd ice ici icp ics icy idc idd ide idi idp ids idy ie- iec ied iee iei iep ies iey iic iid iie iii iip iis ipc ipd ipe ipi ipp ips ipy is- isc isd ise isi isp iss isy iyc iye iys iyy p-p pcc pcd pce pci pcp pcs pdc pdd pde pdi pdp pds pec ped pee pei pep pes pey pic pid pie pii pip pis ppc ppd ppe ppi ppp pps ps- psc psd pse psi psp pss psy py- pyc pyd pye pys scc scd sce sci scp scs sdc sdd sde sdi sdp sds sdy se- sec sed see sei sep ses sey sic sid sie sii sip sis spc spd spe spi spp sps spy ss- ssc ssd sse ssi ssp sss sy- syc syd sye syi syp sys ycc ycd yce yci ycp ycs ycy yde yds ydy yec yed yee yei yep yes yey yid yie yii yip yis ypd yps ysc yse ysi ysp yss ysy yyc yye yys yyy