C1111233133313231133133313331333132313231333121111133313232233313111   >>    C111123313331323113313331333133313231323133312111113331323223331311   <<    C1111233133313231133133313331333132313231333121111133313232233313113   >>      C1111233133313231133133313331333132313231333121111133313232233313112   >>