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

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

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