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

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

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