C1111233131211111211113313331333133313331333133313331333133311233133322231   >>    C111123313121111121111331333133313331333133313331333133313331123313332223   <<    C1111233131211111211113313331333133313331333133313331333133311233133322233   >>      C1111233131211111211113313331333133313331333133313331333133311233133322232   >>