C11111211113313112113313331333133313331322133313331323331123311   >>    C1111121111331311211331333133313331333132213331333132333112331   <<    C11111211113313112113313331333133313331322133313331323331123313   >>      C11111211113313112113313331333133313331322133313331323331123312   >>