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

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

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