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

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

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