\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 +0(0b) dup getc retr dup putc push +4(3b) mod push +3(2b) sub jneg null push +10(4b) putc jump null