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

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

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