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

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

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