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

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

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