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

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

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