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

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

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