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

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

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