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

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

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