*SUPPORT*
IN: kiki fep OUT: PURPLE GREEN
IN: fep OUT: GREEN
IN: tufa zup tufa OUT: RED RED RED RED
IN: fep wif wif OUT: GREEN YELLOW YELLOW
IN: fep gazzer OUT: GREEN GREEN GREEN GREEN GREEN GREEN GREEN
IN: kiki tufa gazzer OUT: PURPLE RED RED RED RED RED RED RED
IN: tufa wif gazzer OUT: RED YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: fep kiki fep OUT: GREEN PURPLE GREEN
IN: tufa lug OUT: RED RED
IN: kiki wif OUT: PURPLE YELLOW
IN: kiki fep lug OUT: PURPLE GREEN GREEN
IN: wif zup kiki OUT: PURPLE PURPLE YELLOW PURPLE
IN: wif gazzer OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: kiki tufa zup tufa OUT: PURPLE RED RED RED RED

*QUERY*
IN: wif zup tufa OUT: RED RED YELLOW RED
IN: fep lug OUT: GREEN GREEN
IN: wif lug OUT: YELLOW YELLOW
IN: kiki zup fep OUT: GREEN GREEN PURPLE GREEN
IN: tufa zup wif OUT: YELLOW YELLOW RED YELLOW
IN: wif OUT: YELLOW
IN: kiki gazzer OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: kiki lug OUT: PURPLE PURPLE
IN: tufa kiki fep OUT: RED PURPLE GREEN
IN: kiki zup kiki OUT: PURPLE PURPLE PURPLE PURPLE

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