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

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

*GRAMMAR*
fep -> BLUE 
 gazzer -> PURPLE 
 zup -> YELLOW 
 dax -> GREEN 
 u1 tufa u2 -> [u2] [u1] [u2] [u2] 
 u1 kiki -> [u1] [u1] 
 u1 lug x1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 