C111113331333132322331333133313331333133323223313311211111211111131233113121   >>    C11111333133313232233133313331333133313332322331331121111121111113123311312   <<    C111113331333132322331333133313331333133323223313311211111211111131233113123   >>      C111113331333132322331333133313331333133323223313311211111211111131233113122   >>