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

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

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