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

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

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