C13223313311212111133133313331323133313331323121211111133112311   >>    C1322331331121211113313331333132313331333132312121111113311231   <<    C13223313311212111133133313331323133313331323121211111133112313   >>      C13223313311212111133133313331323133313331323121211111133112312   >>