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

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

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