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

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

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