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

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

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