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

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

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