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

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

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