C13223313311212111133133313331333133313233121333133313113313121111123232211   >>    C1322331331121211113313331333133313331323312133313331311331312111112323221   <<    C13223313311212111133133313331333133313233121333133313113313121111123232213   >>      C13223313311212111133133313331333133313233121333133313113313121111123232212   >>