Should I be using a rule instead?

[hack_papi]

Hey all,
I am trying to write a mask of specific length such that involves a possible digit appended similar to this '?l?l?l?l?l?l?d' but a bit more complex, the thing is I would also like all entries without the digit to be brute forced too. Should I just write two separate masks:

Code:

?l?l?l?l?l?l

?l?l?l?l?l?l?d

or is there a way to accomplish this with just a single mask? I know that you can create a custom value character -1 ?l?d but the length of letters needs to be the same. Thank you.