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

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

*GRAMMAR*
gazzer -> YELLOW 
 lug -> RED 
 blicket -> BLUE 
 wif -> GREEN 
 x1 zup x2 -> [x1] [x2] 
 x1 fep -> [x1] [x1] 
 x1 tufa u1 -> [x1] [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 