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

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

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