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

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

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