See https://github.com/hashcat/hashcat-utils/releases
use:
combinator left.txt right.txt > combi.txt
resulting in combi.txt
Alfa
Alfa9
Alfa99
Alpha
Alpha9
Alpha99
Alfabeta
Alfabeta9
Alfabeta99
Alphabeta
Alphabeta9
Alphabeta99
Alfabéta
Alfabéta9
Alfabéta99
Alphabéta
Alphabéta9
Alphabéta99
this combi.txt you can use for futher combinations, have fun
use:
combinator left.txt right.txt > combi.txt
resulting in combi.txt
Alfa
Alfa9
Alfa99
Alpha
Alpha9
Alpha99
Alfabeta
Alfabeta9
Alfabeta99
Alphabeta
Alphabeta9
Alphabeta99
Alfabéta
Alfabéta9
Alfabéta99
Alphabéta
Alphabéta9
Alphabéta99
this combi.txt you can use for futher combinations, have fun