C212313222213113313112113121111331333313331333133313223313331333132221111   >>    C21231322221311331311211312111133133331333133313331322331333133313222111   <<    C212313222213113313112113121111331333313331333133313223313331333132221113   >>      C212313222213113313112113121111331333313331333133313223313331333132221112   >>