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

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

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