Consider the code with parity check matrix H of length 8 whose transpose is given as

H= ( 1 1 1 0 0 0 0 0

0 0 0 1 1 1 0 0

0 0 1 0 0 1 1 1)

Write the message sent to N(1) from N(1) for three iterations of the sum-product algorithm.

Note that each iteration consists of two steps - the horizontal step and the vertical step.