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

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

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