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

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

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