C13223313311212111133133313331333133313231323133213331323222212121   >>    C1322331331121211113313331333133313331323132313321333132322221212   <<    C13223313311212111133133313331333133313231323133213331323222212123   >>      C13223313311212111133133313331333133313231323133213331323222212122   >>