iiiiiiiiiiii
nnnnnn
mmmm

IIIIIIIIIIII
NNNNN
MMMM
 !
One space one break
   !
2 spaces 2 breaks
     !
3 spaces 3 breaks
       !
4 spaces 4 breaks
         !
5 spaces 5 breaks
           !
6 spaces 6 breaks

 !
One non-breaking space
  !
2 non-breaking space
   !
3 non-breaking spaces
    !
4 non-breaking spaces
     !
5 non-breaking spaces
      !
6 non-breaking spaces