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

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

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