If I use a key the length of five being

n=sub key number
x=separator between the key number and the amount of times key was used
,=separator between the sub keys
a=amount of times that sub key was used

0nxa,0nxa,0nxa,0nxa,0nxa looks like 01x1,01x1,01x1,01x1,01x1

Each sub key is a possible of 04x230 big in size meaning I can use 01-04 about 230 times and have 5 keys(not sub keys) total.

how many possible combinations are in a key that size