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

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

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