1{h;d} x s/ /\n/g : s/0\(0*\)$/X\1/gm t s/$/@0123456789/gm s/\(.\)\(X*\)@.*\(.\)\1.*/\3\2/gm y/X/9/ /\b0\+\b\n\?/{s///;x;p;x} x
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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