C13223313311212111133133313331333133313231323133211331333132313232123211321   >>    C1322331331121211113313331333133313331323132313321133133313231323212321132   <<    C13223313311212111133133313331333133313231323133211331333132313232123211323   >>      C13223313311212111133133313331333133313231323133211331333132313232123211322   >>