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

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

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