t1 = (1,)
t2 = (1,2,3)
t3 = 1,2,3
t4 = 1,2,(3,4)

print(type(t4))
print(t4[1:])
t5 = t2 + t3
print(t5)

t3.append(4)

a = ((10, 20), (30, 40), (50, 60))
b = ([10, 20], [30, 40], [50, 60])
c = [(10, 20), (30, 40), (50, 60)]