C1111233131211111211113313331333133313331333133313331322331333132333133313111   >>    C111123313121111121111331333133313331333133313331333132233133313233313331311   <<    C1111233131211111211113313331333133313331333133313331322331333132333133313113   >>      C1111233131211111211113313331333133313331333133313331322331333132333133313112   >>