How to write a wordlist

[Snoopy]

So 

abc123456testpassword%$
abcabc123456testpassword
abcabc123456abctestpassword%$??

well this sounds for me like a job for princeprocessor

generate your own wordlist with your 

abc
123456
testpassword

combine this with princeprocessor and or hashcatutils combipow, combipow3, for the special chars at the end you can use combinator attack and or rules like $X (append) for this

you can utilize hashcat for buildig up the rules

hashcat --stdout -a 3 -1 ?s "$?1" >> myruleset
hashcat --stdout -a 3 -1 ?s "$?1 $?1" >> myruleset

this will generate a ruleset with one to two  specail chars appended