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

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

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