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

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

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