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

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

*GRAMMAR*
zup -> RED 
 tufa -> GREEN 
 lug -> YELLOW 
 dax -> PINK 
 x1 wif x2 -> [x1] [x2] [x1] 
 u1 kiki u2 -> [u1] [u2] 
 x1 gazzer -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 