This group is easy and funny. You must two or more of the same thing like two men, two women, two birds, three cats, 4 horses etc You will not be able to mix them as a man and a woman, a horse and a cow. Have to be same but you can put a man and boy or a woman with a girl. It could be a cat and a kitten but not a cat and a dog. It have to be the same. Thank you and fun!