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

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

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