Example:Consider ????3 the group of permutations of {1,2,3}

????3 = {e, (1 2 3), (1 3 2), (1 2), (2 3), (1 3) }

Let H be the subgroup : {e, (1 2 3), (1 3 2) }

compute the left and right cosets of H:

explain clearly.