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

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

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