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

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

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