DODAWANIE W ZAKRESIE 20
16 + 2 = 3 + 17 = 12 + 1 = 7 + 12 = 14 + 2 =
3 + 13 =
14 + 3 =
4 + 14 = 11 + 4 = 18 + 1 = 6 + 13 =
5 + 15 =
15 + 5 = 2 + 12 = 3 + 14 =