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

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

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