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

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

*GRAMMAR*
zup -> BLUE 
 dax -> RED 
 wif -> YELLOW 
 tufa -> GREEN 
 x1 kiki -> [x1] [x1] 
 u1 fep -> [u1] [u1] 
 u1 gazzer u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 