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

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

*GRAMMAR*
lug -> RED 
 dax -> YELLOW 
 wif -> BLUE 
 tufa -> PURPLE 
 x1 gazzer -> [x1] [x1] [x1] [x1] 
 u1 zup u2 -> [u1] [u2] 
 x1 fep x2 -> [x2] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 