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

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

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