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

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

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