# Find the difference between the terms

A = [1, 4, 7, 10, 13, 16, 19] # constant difference
print(A[1] - A[0])
for i in range(len(A)-1):
  print(A[i+1] - A[i])

  B = [2, 4, 7, 10, 13, 16, 19] # constant difference
print(B[1] - B[0])
for i in range(len(B)-1):
  print(B[i+1] - B[i])
