C13223313311212111133133313331333133313232233131333132313232211   >>    C1322331331121211113313331333133313331323223313133313231323221   <<    C13223313311212111133133313331333133313232233131333132313232213   >>      C13223313311212111133133313331333133313232233131333132313232212   >>