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

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

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