C13223313311212111133133313331333132313231323133313331323123123121   >>    C1322331331121211113313331333133313231323132313331333132312312312   <<    C13223313311212111133133313331333132313231323133313331323123123123   >>      C13223313311212111133133313331333132313231323133313331323123123122   >>