10 9 8 7 6 5 4 3 2 1 <br>9 8 7 6 5 4 3 2 1 <br>8 7 6 5 4 3 2 1 <br>7 6 5 4 3 2 1 <br>6 5 4 3 2 1 <br>5 4 3 2 1 <br>4 3 2 1 <br>3 2 1 <br>2 1 <br>1 <br>