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

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

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