From matings between chickens heterozygous what phenotypic classes represented among the viable progeny, what are their expected relative frequencies?

Heterozygous Cp cp chickens express a condition called creeper, in which the leg and wing bones are shorter than normal (normal is cp cp). The dominant Cp allele is lethal when homozygous. Two alleles of an independently segregating gene determine white (WW or Ww) versus yellow (ww) skin color. From matings between chickens heterozygous for both of these genes, what phenotypic classes will be represented among the viable progeny, and what are their expected relative frequencies?