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

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

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