C13223313311212111133133313331333131212111113331333133313113313233313132322121   >>    C1322331331121211113313331333133313121211111333133313331311331323331313232212   <<    C13223313311212111133133313331333131212111113331333133313113313233313132322123   >>      C13223313311212111133133313331333131212111113331333133313113313233313132322122   >>