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

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

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