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

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

*GRAMMAR*
dax -> PURPLE 
 wif -> RED 
 tufa -> GREEN 
 fep -> BLUE 
 x1 zup x2 -> [x2] [x1] [x2] 
 u1 blicket u2 -> [u1] [u2] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 