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

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

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