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

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

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