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

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

*GRAMMAR*
dax -> BLUE 
 blicket -> RED 
 wif -> GREEN 
 gazzer -> YELLOW 
 u1 fep u2 -> [u1] [u2] [u2] [u1] [u2] 
 x1 lug x2 -> [x2] [x1] [x2] [x2] [x1] 
 u1 zup u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 