-ey c-- ccc ccd cce cco ccs cdc cdd cde cdo cds cdy ce- cec ced cee ceo ces cey co- coc cod coe coo cos coy csc csd cse cso css csy cyc cyd cye cyo cys dcc dcd dce dco dcs ddc ddd dde ddo dds ddy de- dec ded dee deo des dey doc dod doe doo dos doy dsc dsd dse dso dss dsy dy- dyc dyd dye dyo dys dyy ec- ecc ecd ece eco ecs ed- edc edd ede edo eds edy eec eed eee eeo ees eey eo- eoc eod eoe eoo eos es- esc esd ese eso ess esy eyc eyd eye eyo eys oc- occ ocd oco ocs odc odd ode odo ods oec oed oee oeo oes oey oo- ooc ood ooo oos os- osc osd ose oso oss oyd oye oyo oys scc scd sce sco scs sdc sdd sde sdo sds sdy se- sec sed see seo ses sey soc sod soe soo sos soy ss- ssc ssd sse sso sss sy- syc syd sye sys ycc ycd yce yco ycs ycy yde ydo yds ydy yec yed yee yeo yes yey yoc yod yoe yoo yos yoy ysc yse yso yss ysy yyc yye yys yyy