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

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

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