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

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

*GRAMMAR*
kiki -> GREEN 
 lug -> BLUE 
 zup -> RED 
 wif -> PINK 
 x1 tufa x2 -> [x2] [x1] 
 u1 fep u2 -> [u2] [u1] 
 x1 dax x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 