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

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

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