C1111133313331323223313331333133313331333131211113313331311221123113121   >>    C111113331333132322331333133313331333133313121111331333131122112311312   <<    C1111133313331323223313331333133313331333131211113313331311221123113123   >>      C1111133313331323223313331333133313331333131211113313331311221123113122   >>