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

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

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