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

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

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