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

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

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