1111X1XX11X12121
111X1X1X11X12121
1X1111X21X212121
211111XX11X12121
211XXX121X212121
2X1XXX1X11X12121
2X1XXX121X212121
1111X11212XX21MM
111X1X1112XX21MM
12111112X22221MM
2111111212XX21MM
211XXX11X22221MM
221XXX1112XX21MM
221XXX11X22221MM
