C13223313311212111133133313331333131212111113331333133312111111233211121   >>    C1322331331121211113313331333133313121211111333133313331211111123321112   <<    C13223313311212111133133313331333131212111113331333133312111111233211123   >>      C13223313311212111133133313331333131212111113331333133312111111233211122   >>