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

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

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