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

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

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