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

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

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