C212313222213113313112113121111331333313331333133313223313331323223323121   >>    C21231322221311331311211312111133133331333133313331322331333132322332312   <<    C212313222213113313112113121111331333313331333133313223313331323223323123   >>      C212313222213113313112113121111331333313331333133313223313331323223323122   >>