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

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

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