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

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

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