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

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

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