C132233133112121111331333133313231333132333131211113313223313123221212321   >>    C13223313311212111133133313331323133313233313121111331322331312322121232   <<    C132233133112121111331333133313231333132333131211113313223313123221212323   >>      C132233133112121111331333133313231333132333131211113313223313123221212322   >>