C1111233131211111211113313331333133313331333133313331333133313222332313131   >>    C111123313121111121111331333133313331333133313331333133313331322233231313   <<    C1111233131211111211113313331333133313331333133313331333133313222332313133   >>      C1111233131211111211113313331333133313331333133313331333133313222332313132   >>