4 Minesweepers (Mini Puzzles Series #24)

It is fun solving a Minesweepers puzzles. It is more fun to solve four Minesweepers puzzles simultaneously. In this 4 Minesweepers puzzle, one has to solve all the linked Minesweepers puzzles together.

I prepared two puzzles to this type when this puzzle type appeared in Oguz Atay Puzzle Contest (OAPC)-5 championship. I am posting this 4 Minesweepers as 24th puzzle in Mini Puzzles Series.

Rules of 4 Minesweepers puzzle

Place some mines in each diagram so that the numbers inside the grid indicate the amount of mines in the neighboring cells. When all four puzzles are solved, every single coordinate should exactly contain one mine.