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

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

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