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

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

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