In humans, a widow's peak is caused by a dominant allele W, and a continuous hairline, by a recessive allele w. Short fingers are caused by a dominant allele S, and long fingers, by a recessive allele s. Suppose a woman with a continuous hairline and short fingers and a man with a widow's peak and long fingers have three children. One child has short fingers and a widow's peak, one has long fingers and a widow's peak, and one has long fingers and a continuous hairline. What are the genotypes of the parents?