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

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

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