C111123313331323113313331333133313331323131211113313331323331333112333131   >>    C11112331333132311331333133313331333132313121111331333132333133311233313   <<    C111123313331323113313331333133313331323131211113313331323331333112333133   >>      C111123313331323113313331333133313331323131211113313331323331333112333132   >>