public class Main
{
    public static void main(String[] args) { 
 
        // n をそれぞれ  -8 から 8 として実行 (計17回)
        for (int n = -8; n <= 8; n++) {
 
            // x = n*n としてprintGraph(int x) を実行
            printGraph(n * n); 
        } 
    }
 
    public static void printGraph(int x){ 
        int i; 
 
        // i が i < x の間実行 (xはn*n)
        for (i = 0; i < x; i++) { 
            // 改行をせずに出力
            System.out.print("*"); 
        }
 
        // 改行をして出力
        System.out.println(""); 
    } 
}

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