Puzzle 215: LITS Quad

Rules: The challenge is to paint four areas of four connected cells in each shape, subject to the following rules:

1. No two of the same tetrominos, including rotations / reflections are allowed to touch.
2. All painted cells must connect upon completion.
3. No 2x2 area of painted cells is allowed.
4. Each area contains four separate tetrominos, one of each of the four allowed LITS tetrominos.