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

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

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