*SUPPORT*
IN: lug wif OUT: RED GREEN
IN: lug OUT: RED
IN: wif dax fep OUT: GREEN BLUE BLUE
IN: wif dax OUT: GREEN BLUE
IN: dax blicket OUT: BLUE BLUE BLUE BLUE
IN: lug lug tufa OUT: RED RED RED RED
IN: wif tufa OUT: GREEN GREEN GREEN
IN: kiki wif blicket OUT: PINK GREEN GREEN GREEN GREEN
IN: dax fep OUT: BLUE BLUE
IN: dax tufa OUT: BLUE BLUE BLUE
IN: dax OUT: BLUE
IN: dax kiki OUT: BLUE PINK
IN: lug tufa OUT: RED RED RED
IN: wif OUT: GREEN

*QUERY*
IN: lug fep OUT: RED RED
IN: kiki dax tufa OUT: PINK BLUE BLUE BLUE
IN: wif fep OUT: GREEN GREEN
IN: kiki fep OUT: PINK PINK
IN: kiki OUT: PINK
IN: wif blicket OUT: GREEN GREEN GREEN GREEN
IN: kiki tufa OUT: PINK PINK PINK
IN: lug blicket OUT: RED RED RED RED
IN: kiki blicket OUT: PINK PINK PINK PINK
IN: lug lug OUT: RED RED

*GRAMMAR*
lug -> RED 
 wif -> GREEN 
 kiki -> PINK 
 dax -> BLUE 
 u1 fep -> [u1] [u1] 
 u1 tufa -> [u1] [u1] [u1] 
 u1 blicket -> [u1] [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 