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

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

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