【Question 6】Using 2 unit squares (unit squares) can form a 2-connected square, which is commonly known as a domino. Obviously, dominoes that can coincide after translation, rotation, or symmetry transformation should be considered as the same one, so there is only one domino.
Similarly, the different 3-connected squares formed by 3 unit squares are only 2.
Using 4 unit squares to form different 4-connected squares, there are 5.
Then, using 5 unit squares to form different 5-connected squares, there are $\qquad$.

(Note: The blank space at the end is left as in the original text for the answer to be filled in.)
Exam Point: Shape Cutting and Pasting
Analysis: There are 12 different 5-ominoes (polyominoes made of 5 unit squares) that can be intuitively remembered using the English letters F, I, L, P, T, U, V, W, X, Y, Z, which represent 11 of these shapes.