-ey c-- ccc cce cco ccs ccx ce- cec cee ceo ces cex cey co- coc coe coo cos cox coy csc cse cso css csx csy cxc cxo cxs cxx cyc cye cyo cys ec- ecc ece eco ecs ecx eec eee eeo ees eex eey eo- eoc eoe eoo eos es- esc ese eso ess esx esy ex- exc exe exo exs exx exy eyc eye eyo eys oc- occ oco ocs ocx oec oee oeo oes oex oey oo- ooc ooo oos oox os- osc ose oso oss osx ox- oxc oxo oxx oxy oye oyo oys scc sce sco scs scx se- sec see seo ses sex sey soc soe soo sos sox soy ss- ssc sse sso sss ssx sxc sxs sy- syc sye sys syx xcx xee xes xex xoc xoo xos xox xsc xss xxo xxx xxy xyy ycc yce yco ycs ycy yec yee yeo yes yex yey yoc yoe yoo yos yox yoy ysc yse yso yss ysy yxe yxy yyc yye yys yyy