C1111233133313231133133313331333131211111331121211113313113313231322321   >>    C111123313331323113313331333133313121111133112121111331311331323132232   <<    C1111233133313231133133313331333131211111331121211113313113313231322323   >>      C1111233133313231133133313331333131211111331121211113313113313231322322   >>