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

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

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