\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:
push -1(1b) mark null dup push +1(1b) add dup dup getc retr push -2(2b) mod jneg null putc jump null