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

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

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