C1111233133313231133133313331333133313231331133133313331311221123113221   >>    C111123313331323113313331333133313331323133113313331333131122112311322   <<    C1111233133313231133133313331333133313231331133133313331311221123113223   >>      C1111233133313231133133313331333133313231331133133313331311221123113222   >>