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

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

*GRAMMAR*
tufa -> BLUE 
 fep -> GREEN 
 zup -> PURPLE 
 dax -> RED 
 x1 gazzer -> [x1] [x1] 
 x1 blicket x2 -> [x1] [x2] [x1] 
 x1 wif u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 