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

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

*GRAMMAR*
dax -> GREEN 
 zup -> PURPLE 
 gazzer -> RED 
 tufa -> BLUE 
 u1 fep u2 -> [u2] [u1] [u2] 
 x1 kiki x2 -> [x1] [x2] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 