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

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

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