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

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

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