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

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

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