*SUPPORT*
IN: wif zup tufa OUT: RED GREEN
IN: fep OUT: PURPLE
IN: lug blicket wif OUT: RED RED RED BLUE
IN: tufa fep zup lug gazzer OUT: GREEN PURPLE BLUE GREEN PURPLE BLUE
IN: tufa OUT: GREEN
IN: tufa tufa OUT: GREEN GREEN
IN: tufa zup lug OUT: GREEN BLUE
IN: tufa gazzer gazzer OUT: GREEN GREEN GREEN GREEN
IN: wif blicket wif zup fep OUT: RED PURPLE RED PURPLE RED PURPLE RED
IN: lug zup tufa OUT: BLUE GREEN
IN: fep zup fep OUT: PURPLE PURPLE
IN: wif OUT: RED
IN: lug zup wif gazzer OUT: BLUE RED BLUE RED
IN: wif blicket fep OUT: PURPLE PURPLE PURPLE RED

*QUERY*
IN: wif zup fep OUT: RED PURPLE
IN: fep zup tufa OUT: PURPLE GREEN
IN: lug OUT: BLUE
IN: tufa zup wif OUT: GREEN RED
IN: tufa zup fep OUT: GREEN PURPLE
IN: lug zup fep OUT: BLUE PURPLE
IN: lug zup lug OUT: BLUE BLUE
IN: wif zup tufa gazzer OUT: RED GREEN RED GREEN
IN: tufa blicket lug lug OUT: BLUE BLUE BLUE BLUE BLUE BLUE GREEN
IN: tufa zup tufa OUT: GREEN GREEN

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