*SUPPORT*
IN: fep wif zup OUT: GREEN PURPLE
IN: zup OUT: PURPLE
IN: dax kiki OUT: RED RED
IN: fep zup zup tufa gazzer tufa OUT: GREEN PURPLE PURPLE YELLOW YELLOW YELLOW YELLOW YELLOW
IN: tufa gazzer zup OUT: YELLOW PURPLE YELLOW PURPLE PURPLE
IN: zup kiki OUT: PURPLE PURPLE
IN: tufa kiki wif tufa OUT: YELLOW YELLOW YELLOW
IN: zup fep wif zup wif fep wif zup OUT: PURPLE GREEN PURPLE GREEN PURPLE
IN: dax OUT: RED
IN: fep gazzer tufa OUT: GREEN YELLOW GREEN YELLOW YELLOW
IN: zup fep wif fep OUT: PURPLE GREEN GREEN
IN: fep gazzer dax OUT: GREEN RED GREEN RED RED
IN: zup gazzer zup OUT: PURPLE PURPLE PURPLE PURPLE PURPLE
IN: zup wif dax wif dax OUT: PURPLE RED RED

*QUERY*
IN: dax gazzer fep OUT: RED GREEN RED GREEN GREEN
IN: fep OUT: GREEN
IN: fep dax wif tufa OUT: GREEN RED YELLOW
IN: tufa gazzer zup wif tufa wif dax OUT: YELLOW PURPLE YELLOW PURPLE PURPLE YELLOW RED
IN: zup tufa gazzer zup OUT: PURPLE YELLOW PURPLE YELLOW PURPLE PURPLE
IN: fep kiki OUT: GREEN GREEN
IN: tufa gazzer tufa OUT: YELLOW YELLOW YELLOW YELLOW YELLOW
IN: tufa OUT: YELLOW
IN: dax dax OUT: RED RED
IN: fep kiki wif tufa OUT: GREEN GREEN YELLOW

*GRAMMAR*
fep -> GREEN 
 dax -> RED 
 tufa -> YELLOW 
 zup -> PURPLE 
 u1 gazzer u2 -> [u1] [u2] [u1] [u2] [u2] 
 u1 kiki -> [u1] [u1] 
 x1 wif u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 