Basic merged-concatenate wordlists script-ctf-tool.
Combine words using from multiple wordlists
There are 3 example wordlists as fruit.txt, color.txt, country.txt

For example try to combine fruit.txt and color.txt:
AppleRed
AppleGreen
AppleBlue
ApricotRed
ApricotGren
.
...
Same thing for 3 wordlists combining as fruit.txt, color.txt, country.txt
AppleRedTurkey
AppleRedUnitedStates
AppleRedNetherlands
AppleGreenTurkey
AppleGreenUnitedStates
.
...
python wordcon.py wordlist1.txt wordlist2.txt
python wordcon.py wordlist1.txt wordlist2.txt wordlist3.txt
python twoloopcon.py wordlist1.txt wordlist2.txt
pip install more-itertools
git clone https://github.com/ozancetin/Wordlists-Concatenator Wordlists-Concatenator
wordcon.py is using itertools library which is good at combination algorithm stuff much more fast and efficient for it. Especially good at big wordlists.
twoloopcon.py is using nested 2 for loops which has more complexity than wordcon.py, purpose of itertools lib issue if that happen you can use it. its slow than wordcon.py for big wordlists.
AVOID TO COMBINE MASSIVE MULTIPLE WORDLISTS TOGETHER
For example do not use rockyou.txt + rockyou.txt it can be crash your computer.
If you still wanna use this concern about complexity and combination result, depends on your computer power and storage.

