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

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

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