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

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

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