s/./\x09&!!12345678!!abcdefgh!!/g : s/\x09\(.\)\S*\(..\)\1\(..\)\S*/\2!\3/ s/\(\S\)\(\S*\)\(.\)\(.\)!\(.\)\(.\)$/\1\4 \1\5 \2\4\3!\6\5/ t s/\S*!\S*.//g L d
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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