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

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

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