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

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

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