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

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

*GRAMMAR*
tufa -> PURPLE 
 wif -> RED 
 lug -> BLUE 
 fep -> GREEN 
 u1 zup u2 -> [u2] [u1] 
 x1 blicket u1 -> [u1] [x1] 
 x1 gazzer x2 -> [x1] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 