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

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

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