C1111133313331323223313331333133313331333131211113313331211113313113313231   >>    C111113331333132322331333133313331333133313121111331333121111331311331323   <<    C1111133313331323223313331333133313331333131211113313331211113313113313233   >>      C1111133313331323223313331333133313331333131211113313331211113313113313232   >>