s/./iiabcdefghii=&001234567800/ s/\w*\(\w.\(.\)..\).*\2/\1/g s/\(.\)\(.\).\(.\)\(.\)\(.\)\(.\).\(.\)\(.\)/\1\6\1\7\2\5\2\8\3\5\3\8\4\6\4\7/ s/i.\|.0//g s/../ &/2g
Note that non-ascii characters in the above source code will be escaped (such as \x9f).