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

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

*GRAMMAR*
fep -> PURPLE 
 dax -> PINK 
 lug -> GREEN 
 zup -> RED 
 u1 wif u2 -> [u2] [u1] 
 x1 kiki x2 -> [x1] [x2] 
 x1 tufa -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 