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

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

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