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

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

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