It is a green dog.
.
It is a blue frog.
..
It is a yellow dog.
.
It is a green cat.
.
It is an orange fish.
.
It is a blue fish.
.
It is a purple dog.
.
It is a red dog.
.
It is an orange frog.
.
It is a yellow cat.
..
It is a purple cat.
.
It is a red fish.
.
It is an orange cat.
.
It is a yellow fish.
.
It is a red cat.
.
It is a green frog.
.