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

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

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