complicate ordering

DECLARE @table TABLE(col1 VARCHAR(1), col2 INT)             
            
INSERT INTO @table             
SELECT 'C', 5 UNION             
SELECT 'S', 4 UNION             
SELECT 'T', 1 UNION             
SELECT 'W', 2 UNION             
SELECT 'W', 3            
            
SELECT  col1, col2 = min(col2)            
FROM    @table            
group by col1            
order by col2            
            
select  col1, col2            
from    (            
        select  col1, col2, row_no = row_number() over (partition by col1 order by col2)            
        from    @table            
    ) t            
where   t.row_no    = 1            
order by col2