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

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

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