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

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

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