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

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

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