C1111233133313231133133313331333133313223313133313113313231121211111   >>    C111123313331323113313331333133313331322331313331311331323112121111   <<    C1111233133313231133133313331333133313223313133313113313231121211113   >>      C1111233133313231133133313331333133313223313133313113313231121211112   >>