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

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

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