C13223313311212111133133313331333133313123223313231333132232221   >>    C1322331331121211113313331333133313331312322331323133313223222   <<    C13223313311212111133133313331333133313123223313231333132232223   >>      C13223313311212111133133313331333133313123223313231333132232222   >>