*
121
12321
1234321
123454321
12345654321
1234567654321
123456787654321
12345678987654321
1234567890987654321
mWm
mWm [][]
*
121
12321
1234321
123454321
12345654321
1234567654321
123456787654321
12345678987654321
1234567890987654321
mWm
mWm [][]