\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) mark null dup push +0(0b) dup getc retr dup push +3(2b) mod jzero +0(0b) push +2(2b) mod dup add push +1(1b) sub sub push +0(0b) dup retr mark +0(0b) add putc jump null