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

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

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