*SUPPORT*
IN: dax wif kiki blicket wif zup fep OUT: GREEN RED PURPLE BLUE PURPLE
IN: wif kiki fep OUT: PURPLE BLUE GREEN
IN: dax blicket kiki lug OUT: RED BLUE BLUE
IN: dax OUT: RED
IN: dax zup dax zup fep OUT: GREEN RED RED
IN: wif lug OUT: PURPLE PURPLE
IN: dax blicket dax lug zup dax OUT: RED RED RED RED
IN: kiki blicket kiki blicket dax wif OUT: BLUE BLUE RED PURPLE
IN: kiki blicket fep fep blicket kiki zup fep OUT: BLUE GREEN GREEN GREEN BLUE
IN: dax fep zup dax OUT: RED RED GREEN
IN: kiki kiki blicket dax lug OUT: BLUE BLUE RED RED
IN: fep blicket dax fep blicket dax zup wif OUT: GREEN PURPLE RED GREEN RED
IN: dax wif OUT: RED PURPLE
IN: fep wif OUT: GREEN PURPLE

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

*GRAMMAR*
dax -> RED 
 fep -> GREEN 
 kiki -> BLUE 
 wif -> PURPLE 
 u1 blicket x1 -> [u1] [x1] 
 x1 zup u1 -> [u1] [x1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 