Respuesta :
1:1,1:2,1:3,1:4 2:1,2:2,2:3,2:4,3:1,3:2,3:3,3:4,4:1,4:2,4:3,4:4 good luck and I hope that helped (:
its like 1⇒1 1⇒2 1⇒3 1⇒4 2⇒1 2⇒2 2⇒3 2⇒4 3⇒1 3⇒2 3⇒3 3⇒4 4⇒1 4⇒2 4⇒3 4⇒4