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

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

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