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

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

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