C13223313311212111133133313331211113313231123313331323133313231231231121   >>    C1322331331121211113313331333121111331323112331333132313331323123123112   <<    C13223313311212111133133313331211113313231123313331323133313231231231123   >>      C13223313311212111133133313331211113313231123313331323133313231231231122   >>