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

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

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