B"Today Peter has got an additional homework for tomorrow. The teacher has given three integers to him: n, m and k, and asked him to mark one or more squares on a square grid of size n xe2 x80 x89 xc3 x97 xe2 x80 x89m. The marked squares must form a connected figure, and there must be exactly k triples of marked squares that form an L-shaped tromino -- all three squares are inside a 2 xe2 x80 x89 xc3 x97 xe2 x80 x892 square. The set of squares forms a connected figure if it is possible to get from any square to any other one if you are allowed to move from a square to any adjacent by a common side square. Peter cannot fulfill the task, so he asks you for help. Help him to create such figure. Input data contains one or more test cases. The first line contains the number of test cases t (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89t xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89100). Each of the following t test cases is described by a line that contains three integers: n, m and k (3 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n, xe2 x80 x89m, n xe2 x80 x89 xc3 x97 xe2 x80 x89m xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89105, 0 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89k xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89109). The sum of values of n xe2 x80 x89 xc3 x97 xe2 x80 x89m for all tests in one input data doesn't exceed 105. For each test case print the answer. If it is possible to create such figure, print n lines, m characters each, use asterisk '*' to denote the marked square, and dot '.' to denote the unmarked one. If there is no solution, print -1. Print empty line between test cases. "...