public void Test1()
 {
     Assert.True(Isogram.isIsogram(""));
 }
 public void Test7()
 {
     Assert.True(Isogram.isIsogram("six-year-old"));
 }
 public void Test8()
 {
     Assert.True(Isogram.isIsogram("Old Monk"));
 }
 public void Test6()
 {
     Assert.True(Isogram.isIsogram("thumbscrew-japingly"));
 }
 public void Test5()
 {
     Assert.True(Isogram.isIsogram("Alphabet"));
 }
 public void Test4()
 {
     Assert.True(Isogram.isIsogram("subdermatoglyphic"));
 }
 public void Test3()
 {
     Assert.False(Isogram.isIsogram("eleven"));
 }
 public void Test2()
 {
     Assert.True(Isogram.isIsogram("isogram"));
 }