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

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

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