group_a = {1,2,3,4,5}
group_b = {4,5,6,7,8}
union_set = group_a |group_b
print("union:",union_set)

group_a = {1,2,3,4,5}
group_b = {4,5,6,7,8}
intersaction_set = group_a & group_b
print("intersaction:",intersaction_set)