a1 = [1,2,3]
a2 = [2,3,4]
a3 = [1,1,1]

matrix_a = [a1,a2,a3]

b1 = [4,5,6]
b2 = [7,8,9]
b3 = [4,5,0]

matrix_b = [b1,b2,b3]

c1 = []
c2 = []
c3 = []

matrix_c = [c1,c2,c3]



for n in range(len(matrix_a)):
  for i in range(len(matrix_a[n])):
    matrix_c[n].append(matrix_a[n][i] - matrix_b[n][i])



for n in range(len(matrix_c)):
  for i in range(len(matrix_c[n])):
    print(matrix_c[n][i])