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

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

*GRAMMAR*
lug -> BLUE 
 zup -> GREEN 
 wif -> PURPLE 
 dax -> YELLOW 
 u1 tufa -> [u1] [u1] 
 u1 fep -> [u1] [u1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 