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

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

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