C13223313311212111133133313331323133313331323121211111121123121   >>    C1322331331121211113313331333132313331333132312121111112112312   <<    C13223313311212111133133313331323133313331323121211111121123123   >>      C13223313311212111133133313331323133313331323121211111121123122   >>