21X12X11XX212222
1211XXXX22212122
1X11X21X22X1X222
X111X11X222XXX22
2221X1X12221X122
XX1XXX112X221122
1111X2X122222X22
X1211211X22XX222
221XXX11X2X1X122
XXX12X1122X11X22
