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Basic Tetromino shapes
Similar to Trinomino, Tetramino too has various ways of representing its four-unit squares. The different tetromino can be obtained by rotating the existing tetromino.
Types of Tetromino:
- Straight Tetromino:

- Square Tetromino:

- L-Tetromino:

- T-Tetromino:

- Skew (or) Z-Tetromino:

