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

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

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