C1111133313331323223313331333133313113313112113121111331331123222211   >>    C111113331333132322331333133313331311331311211312111133133112322221   <<    C1111133313331323223313331333133313113313112113121111331331123222213   >>      C1111133313331323223313331333133313113313112113121111331331123222212   >>