1111111111X12121
111111111X112121
11111111X1112121
1111111122212121
1X1XX11X11112121
1X1XX11XXX212121
1X1XX11XX2X12121
1X1XX11X2XX12121
1212211212212121
12122112XXX12121
1212211221212121
1212211222112121
