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

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

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