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

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

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