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

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

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