-ey c-- ccc ccd cce ccs cdc cdd cde cds cdy ce- cec ced cee ces cey csc csd cse css csy cyc cyd cye cys dcc dcd dce dcs ddc ddd dde dds ddy de- dec ded dee des dey dsc dsd dse dss dsy dy- dyc dyd dye dys dyy ec- ecc ecd ece ecs ed- edc edd ede eds edy eec eed eee ees eey es- esc esd ese ess esy eyc eyd eye eys scc scd sce scs sdc sdd sde sds sdy se- sec sed see ses sey ss- ssc ssd sse sss sy- syc syd sye sys ycc ycd yce ycs ycy yde yds ydy yec yed yee yes yey ysc yse yss ysy yyc yye yys yyy