I have a crosstab:
1            Erratic  Intermittent  Lumpy  Smooth  
2                                                          
Intermittent       20            77      9     450        
Lumpy              10             6      1      13       
Unknown             0            13      1       1   
Result:
1               2              Value
Intermittent    Erratic        20
Lumpy           Erratic        10
Unknown         Erratic        0
Intermittent    Intermittent   77
Lumpy           Intermittent   6
Unknown         Intermittent   13
Intermittent    Lumpy          9
Lumpy           Lumpy          1
Unknown         Lumpy          1
Intermittent    Smooth         450
Lumpy           Smooth         13
Unknown         Smooth         1
Basically I need to convert that matrix to simple dataframe
