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

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

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