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

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

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