1X12X12XX21XX222
XX11X221X21X2X22
1X1X2211X1X2XX21
X112221111221221
1X121211X1X2XX22
2112221111221222
XX12X1212221X2M1
11122111X1121202
XX12221X2122X202
2X12221X2122X202
XX12211121221222
2112221121X21222
X12222X1X1X212M2
