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

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

*GRAMMAR*
fep -> YELLOW 
 wif -> GREEN 
 zup -> RED 
 tufa -> PURPLE 
 u1 gazzer -> [u1] [u1] [u1] [u1] 
 u1 dax u2 -> [u2] [u1] 
 x1 lug -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 