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

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

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