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

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

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