How to write a command in Crunch to generate a dictionary?

Question

brute force

Half of the string and the characters that make up the second half are known, so one character can occur a maximum of two times and then side by side (abc00gd, like that). So, as I understand it, crunch does not allow you to make a base of indefinite length with a mask, and I also did not understand how to repeat a maximum of two times. tell.
The data is as follows: the first half is oleg0, and the second consists of four to six digits (I don’t know the length specifically) like this 0,3,4,7,8,9. It turns out such a mask oleg0 [here the numbers are the same, and are repeated a maximum of two times]. For example: oleg0034897, oleg047889, oleg07884 and stuff like that.
I thought about doing it, but it doesn't work.

crunch 9 11 -t oleg0%%%%%% 034789 -d 2% -o '/home/base.txt'

How is it right, tell me.