using System;
using System.Text;
public class Test
{
public static void Main()
{
var one = "①";
Console.WriteLine(one);
Console.WriteLine(one.Normalize(NormalizationForm.FormC));
Console.WriteLine(one.Normalize(NormalizationForm.FormD));
Console.WriteLine(one.Normalize(NormalizationForm.FormKC));
Console.WriteLine(one.Normalize(NormalizationForm.FormKD));
}
}
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