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

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

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