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

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

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