*SUPPORT*
IN: dax fep dax OUT: GREEN GREEN
IN: dax fep wif OUT: PURPLE GREEN
IN: tufa fep dax OUT: GREEN YELLOW
IN: tufa blicket OUT: YELLOW YELLOW YELLOW
IN: wif wif blicket OUT: PURPLE PURPLE PURPLE PURPLE
IN: wif OUT: PURPLE
IN: tufa fep tufa zup wif OUT: PURPLE PURPLE YELLOW YELLOW PURPLE
IN: tufa fep wif OUT: PURPLE YELLOW
IN: kiki kiki tufa fep wif OUT: RED RED PURPLE YELLOW
IN: kiki wif OUT: RED PURPLE
IN: dax kiki OUT: GREEN RED
IN: kiki fep dax OUT: GREEN RED
IN: dax blicket OUT: GREEN GREEN GREEN
IN: kiki blicket OUT: RED RED RED

*QUERY*
IN: kiki OUT: RED
IN: kiki tufa fep wif OUT: RED PURPLE YELLOW
IN: tufa OUT: YELLOW
IN: wif blicket OUT: PURPLE PURPLE PURPLE
IN: wif fep wif OUT: PURPLE PURPLE
IN: tufa blicket zup tufa OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: dax OUT: GREEN
IN: kiki fep tufa OUT: YELLOW RED
IN: wif dax OUT: PURPLE GREEN
IN: kiki kiki blicket OUT: RED RED RED RED

*GRAMMAR*
tufa -> YELLOW 
 kiki -> RED 
 wif -> PURPLE 
 dax -> GREEN 
 x1 zup x2 -> [x2] [x2] [x1] [x2] 
 u1 fep u2 -> [u2] [u1] 
 u1 blicket -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 