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

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

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