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

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

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