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

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

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