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

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

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