Why do not many combination rules have such a rule?

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Why do not many combination rules have such a rule?

Swap location attack rule
For example:

cat 1.txt 
abc

cat 2.txt
123

cat 3.txt
!@#$

I think this rule is advanced and effective.

Hashcat does not have such a rule

The 3 combination attack rule generation should be the result of the following dictionary

abc123!@#
abc!@#$123

123abc!@#$
123!@#$abc

!@#$123abc
!@#$abc123