C132233133112121111331333133313331323331333133313231333121133131121121   >>    C13223313311212111133133313331333132333133313331323133312113313112112   <<    C132233133112121111331333133313331323331333133313231333121133131121123   >>      C132233133112121111331333133313331323331333133313231333121133131121122   >>