\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:
push +0(0b) dup geti mark null dup push +0(0b) retr add puti push +1(1b) add dup push +10(4b) dup putc sub jneg null