C13223313311212111133133313331333133313231323133213331313311231   >>    C1322331331121211113313331333133313331323132313321333131331123   <<    C13223313311212111133133313331333133313231323133213331313311233   >>      C13223313311212111133133313331333133313231323133213331313311232   >>