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

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

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