*SUPPORT*
IN: gazzer dax fep dax OUT: RED GREEN GREEN GREEN
IN: wif tufa OUT: PURPLE PURPLE
IN: kiki fep kiki OUT: BLUE BLUE BLUE
IN: dax fep kiki OUT: BLUE GREEN GREEN
IN: dax fep gazzer OUT: RED GREEN GREEN
IN: kiki tufa OUT: BLUE BLUE
IN: gazzer wif fep gazzer OUT: RED RED PURPLE PURPLE
IN: dax lug OUT: GREEN GREEN GREEN GREEN
IN: kiki kiki OUT: BLUE BLUE
IN: kiki fep wif OUT: PURPLE BLUE BLUE
IN: gazzer tufa OUT: RED RED
IN: kiki fep dax OUT: GREEN BLUE BLUE
IN: gazzer wif fep dax OUT: RED GREEN PURPLE PURPLE
IN: wif kiki OUT: PURPLE BLUE

*QUERY*
IN: dax OUT: GREEN
IN: gazzer OUT: RED
IN: kiki OUT: BLUE
IN: kiki fep gazzer OUT: RED BLUE BLUE
IN: dax gazzer tufa OUT: GREEN RED RED
IN: gazzer lug OUT: RED RED RED RED
IN: kiki kiki tufa OUT: BLUE BLUE BLUE
IN: gazzer fep kiki OUT: BLUE RED RED
IN: wif OUT: PURPLE
IN: dax tufa OUT: GREEN GREEN

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