a=[1,2,3]
b=[4,5,6]
print(a+b)
print([4,5]+[6,7])
a.append(b)
print(a)
a.extend(b)
print(a)
print()

c=(1,2,3)
d=(4,5,6)
print(c+d)
print((1,2,3)+(4,5,6))
print()

e={"1":2,"3":4}
f={"4":5,"6":7}
print(e+f)
