int main(){
    Mat int[2][3] Matrix;

    int Matrix_length;
    int Matrix_width;

    int i;
    int j;

    Matrix = [[1,2,3],[4,5,6]];
    Matrix = Matrix + Matrix;

    Matrix_length = 2;
    Matrix_width = 3;

    printsil("[");
    for ( i = 0; i < Matrix_length; i = i + 1){
        printsil("[");
        for ( j = 0; j < Matrix_width; j = j + 1){
            printiil(Matrix[i][j]);
            if (j < (Matrix_width - 1)){
                printsil(",");
            }
        }
        printsil("]");
        if (i < (Matrix_length - 1)){
            prints(",");
        }
    }
    prints("]");

    return 0;
}
