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

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

*GRAMMAR*
tufa -> PURPLE 
 kiki -> BLUE 
 dax -> GREEN 
 fep -> YELLOW 
 x1 wif x2 -> [x1] [x2] 
 x1 lug -> [x1] [x1] 
 u1 blicket x1 -> [x1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 