How to use and interpret punnett squars

Punnet squares are used to predict the genotypes of the parents' children. on the top of the punnet square is the female's genotype. The side of the punnet square is the male's genotype. match up the letters based on the box (i don't know how to explain the inside well). Pretty much, the inside is the predictions of the children's genotype. The capitol letters are the dominant traits and the lowercase letters are the recessive traits.