C11111333133313232233133313331333133313231333133313332322321132121   >>    C1111133313331323223313331333133313331323133313331333232232113212   <<    C11111333133313232233133313331333133313231333133313332322321132123   >>      C11111333133313232233133313331333133313231333133313332322321132122   >>