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

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

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