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

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

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