Neighbour Coordinates

Problem

For a cell at coordinates (x, y) in a table of size M \times N, output the coordinates of its neighbours. Neighbours share a side with the given cell.

Specification

Natural numbers M, N, x, and y are given (1 \leq x \leq M \leq 10⁹, 1 \leq y \leq N \leq 10⁹).

Output the coordinate pairs of the neighbouring cells in any order.

Sample Tests

Input #1

3 3
2 2

Output #1

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