What Sequence of Values Would Be Printed If the Function

What sequence of values would be printed if the function xxx described below were executed with the value of N being 9?
def xxx(N):
if (N < 4):
print(N)
yyy(7)
else:
yyy(2)
print(N)
def yyy(N):
if (N < 5):
print(N)
zzz(6)
else:
zzz(5)
def zzz(N):
if (N == 5):
print(7)
else:
print(8)
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