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

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

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