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

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

*GRAMMAR*
tufa -> RED 
 lug -> PURPLE 
 kiki -> YELLOW 
 wif -> GREEN 
 u1 fep u2 -> [u2] [u1] 
 x1 blicket x2 -> [x1] [x2] 
 u1 gazzer u2 -> [u2] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 