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

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

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