\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 \x09
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
push +0(0b) dup getc retr dup dup putc mark null dup getc retr swap mark +0(0b) dup copy +2(2b) div copy +2(2b) copy +2(2b) div sub sub dup putc dup copy +2(2b) sub jzero null jump +0(0b)