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

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

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