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Tetrominous (Second Seen) (867)
Instruction:
Divide the grid along the dotted lines into tetrominoes such that every cell in the grid is part of exactly one tetromino. Tetrominoes of the same shape (rotations and reflections of a tetromino count as the same shape) cannot touch each other along an edge (but they may touch diagonally). Some letters may be given in the grid. Each letter must be part of a tetromino with that letter’s shape. It is permissible for a tetromino to contain more than one letter. (It is possible for some tetromino shapes to never appear in the grid, or more than once.)
Some letters are given outside the grid. Each of those letters represents the second tetromino that can be seen in the respective row or column from the respective direction.