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

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

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