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

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

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