How to make a mask which contains 4 numbers "####" in a row

[Xii-Nyth]

I bit confused to how mask a particular set of numbers to appear in an order and still include other numbers, instead of removeing numbers other than the ones in a string.

example: 1234 appears in the password

[b8vr]

Well, if you fx are going for 7 numbers, where 1234 is fixed every time, the masks below would cover all the possibilities:

1234?d?d?d
?d1234?d?d
?d?d1234?d
?d?d?d1234