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

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

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