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

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

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