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

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

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