C1111133313331323223313331333133313113313231333132212111113231313331   >>    C111113331333132322331333133313331311331323133313221211111323131333   <<    C1111133313331323223313331333133313113313231333132212111113231313333   >>      C1111133313331323223313331333133313113313231333132212111113231313332   >>