C11111211113313112113313331333133313331333132313331333133313331312133311232311   >>    C1111121111331311211331333133313331333133313231333133313331333131213331123231   <<    C11111211113313112113313331333133313331333132313331333133313331312133311232313   >>      C11111211113313112113313331333133313331333132313331333133313331312133311232312   >>