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

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

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