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

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

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