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

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

*GRAMMAR*
dax -> BLUE 
 wif -> RED 
 tufa -> GREEN 
 zup -> YELLOW 
 u1 gazzer -> [u1] [u1] [u1] 
 u1 fep u2 -> [u1] [u2] 
 u1 kiki u2 -> [u2] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 