*SUPPORT*
IN: wif zup dax lug OUT: BLUE RED BLUE RED BLUE RED
IN: kiki wif tufa OUT: YELLOW BLUE YELLOW BLUE YELLOW BLUE YELLOW BLUE
IN: dax zup kiki tufa OUT: RED YELLOW RED YELLOW RED YELLOW RED YELLOW
IN: dax zup wif lug OUT: RED BLUE RED BLUE RED BLUE
IN: dax zup dax tufa OUT: RED RED RED RED RED RED RED RED
IN: kiki OUT: YELLOW
IN: wif zup kiki OUT: BLUE YELLOW
IN: kiki zup blicket OUT: YELLOW GREEN
IN: kiki zup wif OUT: YELLOW BLUE
IN: blicket zup wif OUT: GREEN BLUE
IN: dax kiki blicket zup wif OUT: RED YELLOW GREEN BLUE
IN: blicket zup blicket OUT: GREEN GREEN
IN: dax zup kiki OUT: RED YELLOW
IN: blicket dax OUT: GREEN RED

*QUERY*
IN: kiki dax OUT: YELLOW RED
IN: dax dax zup wif OUT: RED RED BLUE
IN: blicket zup kiki OUT: GREEN YELLOW
IN: wif tufa OUT: BLUE BLUE BLUE BLUE
IN: wif zup dax OUT: BLUE RED
IN: wif lug OUT: BLUE BLUE BLUE
IN: wif zup blicket OUT: BLUE GREEN
IN: wif OUT: BLUE
IN: dax OUT: RED
IN: blicket tufa OUT: GREEN GREEN GREEN GREEN

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