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

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

*GRAMMAR*
tufa -> GREEN 
 lug -> RED 
 fep -> BLUE 
 wif -> PURPLE 
 x1 gazzer u1 -> [x1] [x1] [u1] [x1] 
 u1 dax x1 -> [x1] [u1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 