Double Skyscrapers: D1

This puzzle type I created for "Contest for best logic innovation"
Fill the grid with digits 1 to 3, so that each digits appears exactly twice in every row/column.
The cells in the grid can be thought of as individual buildings, and the number inside the building is the number of floors. A number outside the grid indicates how many buildings can be "seen" from the corresponding direction. (A building is seen by an observer if there are not buildings taller (with a greater number), between it and the observer).

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