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

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

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