Unique Rows using Left outer- I am trying to build a query which will give me unique

[rush2hem]

I am trying to build a query which will give me unique rows. Details:-

Table 1    (F1, F2 are the columns)
F1    F2
1    A1
2    A2
3    A3
4    A4

Table 2 (F3,F4 are the columns)

F3    F4
1    B1
1    B11
2    B2
2    B22

My Query (Incorrect)

select rrn(A), F1,F2,F3,F4 from rush2hem1.T1 A left outer join rush2hem1.T2 B on A.F1=B.F3

This gives me below output which is not what I am looking for:-

RRN    F1    F2    F3    F4
1    1    A1      1    B1  
1    1    A1      1    B11 
2    2    A2      2    B2  
2    2    A2      2    B22 
3    3    A3      (null)    (null)
4    4    A4      (null)    (null)

Expected output that I am building query for is:-

RRN    F1    F2    F3    F4
1    1    A1      1    B1  
2    2    A2      2    B2  
3    3    A3      (null)    (null)
4    4    A4      (null)    (null)

Please let me know if you have any suggestions.

[Luuk]

you should also explain why this i wrong

2 2 A2 2 B2 
 2 2 A2 2 B22 

and this is correct

2 2 A2 2 B2 

Should only the first row in Table 2 be returned?
or the one with the shortest (in characters) F4?