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

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

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