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

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

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