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

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

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