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

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

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