C11111211113313112113313331333133313331333132313331333133313331323331333233111   >>    C1111121111331311211331333133313331333133313231333133313331333132333133323311   <<    C11111211113313112113313331333133313331333132313331333133313331323331333233113   >>      C11111211113313112113313331333133313331333132313331333133313331323331333233112   >>