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

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

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