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

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

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