result = ""
s1 = Text1.Text
s2 = Text2.Text
i = 1
Do While i <= Len(s1)
If Mid(s1,i,Len(s2)) <> s2 Then
result = result + Mid(s1, i, 1)
i = i + 1
Else
i = i + Len(s2)
End If
Loop
在文本框Text1和Text2中分别输入“Pyyesthon”和“yes”,执行该程序段后,变量result的值是( )