Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim Iv1 As Integer = TextBox1.Text
        Dim Iv2 As Integer = TextBox2.Text
        Dim Iv3 As Integer = TextBox3.Text
        Dim Iv4 As Integer = TextBox4.Text
        Dim Iv5 As Integer = TextBox5.Text
        Dim Iv6 As Integer = TextBox6.Text
        Dim Iv7 As Integer = TextBox7.Text
        Dim Iv8 As Integer = TextBox8.Text
        Dim Iv9 As Integer = TextBox9.Text
        Dim Iv10 As Integer = TextBox10.Text
        Dim Iv11 As Integer = TextBox11.Text
        Dim Iv12 As Integer = TextBox12.Text

        If Iv1 < 32 Then
            If Iv2 < 32 Then
                If Iv3 < 32 Then
                    If Iv4 < 32 Then
                        If Iv5 < 32 Then
                            If Iv6 < 32 Then
                                If Iv7 < 32 Then
                                    If Iv8 < 32 Then
                                        If Iv9 < 32 Then
                                            If Iv10 < 32 Then
                                                If Iv11 < 32 Then
                                                    If Iv12 < 32 Then
                                                        MessageBox.Show("Good")
                                                        Else
                                                    End If
                                                End If
                                            End If
                                        End If
                                    End If
                                End If
                            End If
                        End If
                    End If
                End If
            End If
        End If