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

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

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