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

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

*GRAMMAR*
wif -> GREEN 
 tufa -> RED 
 kiki -> PURPLE 
 fep -> BLUE 
 x1 lug -> [x1] [x1] [x1] 
 u1 dax -> [u1] [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 