r w x r - x r - x /
r - x r - x r - x home
r w x - - x - - x anydir
r w x r - x r - x somedir
cannot be the output of your commands:
you insert a space after 3 and 7 characters. The you replace every character by itself and a space. This should be your output:
r w x r - x r - x /
r - x r - x r - x home
r w x - - x - - x anydir
r w x r - x r - x somedir
If this is what you want.
sed 's/^\(...\)\(...\)\(....\).*/\1 \2 \3\n/;s/./& /g'
delete everything except the first ten characters, then insert a space between the first two fields and afters this doublespace the line and insert a newline after it. Perhaps you should describe want you want to achieve.