C13223313311212111133133313331211113313231123313331323133313221321   >>    C1322331331121211113313331333121111331323112331333132313331322132   <<    C13223313311212111133133313331211113313231123313331323133313221323   >>      C13223313311212111133133313331211113313231123313331323133313221322   >>