C1111133313331323223313331333133313113313121111331323111121133311   >>    C111113331333132322331333133313331311331312111133132311112113331   <<    C1111133313331323223313331333133313113313121111331323111121133313   >>      C1111133313331323223313331333133313113313121111331323111121133312   >>