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

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

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