\x09 \x09\x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09\x09\x09 \x09 \x09 \x09 \x09 \x09 \x09\x09\x09\x09 \x09 \x09\x09 \x09 \x09 \x09 \x09 \x09 \x09
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
mark null push +35(6b) dup dup dup dup dup getc getc getc putc retr mark +0(0b) dup putc push +10(4b) dup dup getc retr sub jneg +0(0b) copy +1(1b) putc push +10(4b) putc jump null