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

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

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