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

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

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