listOfTuples :: [(Int,Char)]  
listOfTuples = do  
    n <- [1,2]  
    ch <- ['a','b']  
    return (n,ch) 

listOfTuples :: [(Int,Char)]  
listOfTuples = do  
    n <- [1,2]  
    ch <- ['a','b']  
    return (n,ch) 
