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

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

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