\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 \x09
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
push +0(1b) mark null dup dup getc retr dup dup copy +3(2b) push +2(2b) div mul push +2(2b) mod push +11(4b) mul add putc push +31(5b) div swap push +1(1b) add mul jump null