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

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

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