C111123313331323113313331333133313331323132333133313311211113323321   >>    C11112331333132311331333133313331333132313233313331331121111332332   <<    C111123313331323113313331333133313331323132333133313311211113323323   >>      C111123313331323113313331333133313331323132333133313311211113323322   >>