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

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

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