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

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

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