Help change from a while loop to a for loop

[Larz60+]

show what you have tried

here'a a simple for loop that starts at 2 increments by 6 up to 38
Since it is zero based, terminator is one more (39)

>>> for x in range(2, 39, 6):
...     print(x)
... 
2
8
14
20
26
32
38
>>>