/P/q s/$/\nPPP\nP P\nPPP\nP\nP/ /3/{s/./&&&/mg;s/\n.*/&&&/mg} /0/{s/./&&&&&&&&&&/mg;s/\n.*/&&&&&&&&&&/mg} D
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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