octave:117> perm(3)
ans =

   0   0   1
   1   0   0
   0   1   0

octave:118> perm(3)
ans =

   0   1   0
   0   0   1
   1   0   0

octave:119> perm(3)
ans =

   1   0   0
   0   0   1
   0   1   0

octave:120> perm(5)
ans =

   0   0   1   0   0
   0   0   0   0   1
   1   0   0   0   0
   0   1   0   0   0
   0   0   0   1   0

octave:121> perm(8)
ans =

   0   0   0   0   1   0   0   0
   0   0   1   0   0   0   0   0
   0   1   0   0   0   0   0   0
   0   0   0   1   0   0   0   0
   0   0   0   0   0   1   0   0
   0   0   0   0   0   0   1   0
   0   0   0   0   0   0   0   1
   1   0   0   0   0   0   0   0

octave:122> perm(10)
ans =

   0   0   0   0   1   0   0   0   0   0
   0   1   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   1   0   0   0
   0   0   1   0   0   0   0   0   0   0
   1   0   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   0   0   1   0
   0   0   0   0   0   0   0   1   0   0
   0   0   0   1   0   0   0   0   0   0
   0   0   0   0   0   1   0   0   0   0
   0   0   0   0   0   0   0   0   0   1

octave:123> diary off