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

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

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