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

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

*GRAMMAR*
zup -> YELLOW 
 wif -> GREEN 
 gazzer -> RED 
 lug -> BLUE 
 u1 tufa u2 -> [u1] [u1] [u1] [u2] [u2] 
 u1 kiki -> [u1] [u1] 
 x1 fep x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 