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

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

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