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

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

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