*SUPPORT*
IN: lug tufa kiki tufa lug OUT: GREEN YELLOW GREEN
IN: kiki lug OUT: YELLOW GREEN
IN: kiki kiki fep OUT: YELLOW YELLOW BLUE
IN: fep fep OUT: BLUE BLUE
IN: lug tufa fep tufa fep gazzer kiki OUT: GREEN BLUE BLUE YELLOW
IN: wif fep dax lug OUT: PURPLE BLUE GREEN
IN: wif lug tufa lug dax lug wif lug OUT: PURPLE GREEN GREEN GREEN PURPLE GREEN
IN: fep OUT: BLUE
IN: lug OUT: GREEN
IN: wif dax kiki dax lug lug fep OUT: PURPLE YELLOW GREEN GREEN BLUE
IN: lug wif OUT: GREEN PURPLE
IN: fep lug OUT: BLUE GREEN
IN: lug lug dax kiki tufa fep OUT: GREEN GREEN YELLOW BLUE
IN: lug fep OUT: GREEN BLUE

*QUERY*
IN: kiki fep OUT: YELLOW BLUE
IN: lug fep tufa lug OUT: GREEN BLUE GREEN
IN: wif lug dax kiki gazzer wif kiki OUT: PURPLE GREEN YELLOW PURPLE YELLOW
IN: fep gazzer kiki kiki OUT: BLUE YELLOW YELLOW
IN: wif OUT: PURPLE
IN: kiki OUT: YELLOW
IN: wif dax fep OUT: PURPLE BLUE
IN: lug tufa kiki fep OUT: GREEN YELLOW BLUE
IN: fep dax lug OUT: BLUE GREEN
IN: wif gazzer lug OUT: PURPLE GREEN

*GRAMMAR*
fep -> BLUE 
 lug -> GREEN 
 kiki -> YELLOW 
 wif -> PURPLE 
 x1 dax x2 -> [x1] [x2] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 tufa x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 