s/./1 ABCDEF&EDCBA 1/ s/C.*5.*B\|F8E\|9// h : s/\(.\).\1/\1/ y/12345678/23456789/ s/.*/1&1/ x G x G h s/\n.*// / /b x y/ABCDEF/123456/
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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