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

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

*GRAMMAR*
wif -> RED 
 dax -> GREEN 
 kiki -> PURPLE 
 zup -> BLUE 
 u1 gazzer -> [u1] [u1] 
 u1 lug u2 -> [u2] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 