Use Of PIVOT in SQL Server without aggregate function

Question

I want to change rows into column as it is.. means without any aggregate function on coming answer. like i have 2 columns as ExamType and Obtained marks 1st will contains the values like

 

ExamTypeCode    ObtainedMarks

1                                  18

2                                  20

3                                  45

1                                  15

2                                  22

3                                  47

 

and i want the data like following without any aggregate function

 

1 2 3

----------------

18 20 45

15 22 47

 

I have tried the following query , its giving me ans but not like which i want

SELECT *
FROM
(
SELECT StudentRegCode,ExamTypeCode,ObtainedMark FROM StudentSubjectMark
) AS SourceTable
PIVOT
(MIN([ObtainedMark]) FOR [ExamTypeCode] IN([1],[3],[4])) AS PivotTable;