C1111133313331323223313331333133313311211111211331333133313123132323321   >>    C111113331333132322331333133313331331121111121133133313331312313232332   <<    C1111133313331323223313331333133313311211111211331333133313123132323323   >>      C1111133313331323223313331333133313311211111211331333133313123132323322   >>