C13223313311212111133133313331323133313331323121211113313112113313231121   >>    C1322331331121211113313331333132313331333132312121111331311211331323112   <<    C13223313311212111133133313331323133313331323121211113313112113313231123   >>      C13223313311212111133133313331323133313331323121211113313112113313231122   >>