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

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

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