C1111233133313231133133313331333131211111331121211113313231323113221   >>    C111123313331323113313331333133313121111133112121111331323132311322   <<    C1111233133313231133133313331333131211111331121211113313231323113223   >>      C1111233133313231133133313331333131211111331121211113313231323113222   >>