the 1 isometry classes of irreducible [5,2,3]_2 codes are:

code no       1:
================
1 1 1 1 0
1 1 0 0 1
the automorphism group has order 8
and is strongly generated by the following 3 elements:
(
1 0 0 
0 1 0 
1 1 1 
, 
1 1 1 
0 0 1 
0 1 0 
, 
0 1 0 
1 0 0 
0 0 1 
)
acting on the columns of the generator matrix as follows (in order):
(3, 4), 
(1, 4)(2, 3), 
(1, 2)
orbits: { 1, 4, 2, 3 }, { 5 }