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

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

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