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

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

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