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

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

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