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

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

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