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To move through a matrix in all four directions repeatedly, you can follow the steps below:

1. Set the starting position of the matrix, usually at (0, 0).

2. Choose a direction to move in (up, down, left, or right).

3. Check if moving in that direction is possible - this means checking if the next cell you want to move to is within the bounds of the matrix and has not been visited before.

4. If moving in that direction is possible, move to the next cell and mark it as visited.

5. If moving in that direction is not possible, choose another direction to move in.

6. Repeat steps 2-5 until you have visited all cells in the matrix.

7. After visiting all cells, go back to the starting position and repeat the process from step 2.