C13223313311212111133133313331323133313331323121111331333231121311   >>    C1322331331121211113313331333132313331333132312111133133323112131   <<    C13223313311212111133133313331323133313331323121111331333231121313   >>      C13223313311212111133133313331323133313331323121111331333231121312   >>