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

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

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