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

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

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