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

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

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