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

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

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