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

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

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