Please see the below image for reference:
You could do it with a single for loop
unpacking a value list each iteration.
d = {1: [2, 3], 2: [4, 5]}
for k in d:
x, y = d[k]
print("{} : {}\n{} : {}".format(k, x, k, y))
1 : 2
1 : 3
2 : 4
2 : 5
Because the value lists have just a couple numbers, it can also be done, like so:
for k, v in d.items():
print("{} : {}\n{} : {}".format(k, v[0], k, v[1]))