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

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

*GRAMMAR*
fep -> BLUE 
 dax -> YELLOW 
 zup -> PURPLE 
 wif -> GREEN 
 u1 lug u2 -> [u2] [u2] [u2] [u1] 
 x1 blicket -> [x1] [x1] [x1] [x1] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 