*SUPPORT*
IN: tufa fep dax OUT: GREEN RED
IN: gazzer tufa lug dax lug wif lug wif OUT: YELLOW GREEN RED BLUE BLUE
IN: dax lug tufa OUT: RED GREEN
IN: gazzer dax fep wif lug tufa zup OUT: YELLOW RED BLUE GREEN YELLOW RED BLUE GREEN
IN: tufa OUT: GREEN
IN: tufa fep tufa OUT: GREEN GREEN
IN: gazzer zup OUT: YELLOW YELLOW
IN: tufa fep gazzer OUT: GREEN YELLOW
IN: wif fep tufa lug tufa OUT: BLUE GREEN GREEN
IN: gazzer fep dax OUT: YELLOW RED
IN: gazzer dax lug dax OUT: YELLOW RED RED
IN: dax lug wif OUT: RED BLUE
IN: dax fep gazzer OUT: RED YELLOW
IN: dax lug dax lug dax zup OUT: RED RED RED RED RED RED

*QUERY*
IN: gazzer fep gazzer OUT: YELLOW YELLOW
IN: wif fep gazzer lug tufa lug gazzer OUT: BLUE YELLOW GREEN YELLOW
IN: tufa dax zup OUT: GREEN RED GREEN RED
IN: wif OUT: BLUE
IN: dax zup lug gazzer lug dax OUT: RED RED YELLOW RED
IN: gazzer fep tufa OUT: YELLOW GREEN
IN: gazzer fep dax zup lug wif OUT: YELLOW RED YELLOW RED BLUE
IN: gazzer dax fep gazzer OUT: YELLOW RED YELLOW
IN: dax OUT: RED
IN: wif fep dax zup OUT: BLUE RED BLUE RED

*GRAMMAR*
wif -> BLUE 
 dax -> RED 
 gazzer -> YELLOW 
 tufa -> GREEN 
 x1 lug u1 -> [x1] [u1] 
 x1 zup -> [x1] [x1] 
 u1 fep u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 