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

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

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