Stalin Sort 2 by tails

s!$!\n"$%\&'()*,-./012356789:;<=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ!
s!\w*$!&[\\]^_`\L&!
:
s!\(.\)\(.\)\(.*\n.*\2.*\1\)!\1\3!
t
P
d

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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