C11111211113313112113313331333132313331322132333133313113313221123311   >>    C1111121111331311211331333133313231333132213233313331311331322112331   <<    C11111211113313112113313331333132313331322132333133313113313221123313   >>      C11111211113313112113313331333132313331322132333133313113313221123312   >>