C11111333133313232233133313331333131123313233313231333132331133133321111   >>    C1111133313331323223313331333133313112331323331323133313233113313332111   <<    C11111333133313232233133313331333131123313233313231333132331133133321113   >>      C11111333133313232233133313331333131123313233313231333132331133133321112   >>