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

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

*GRAMMAR*
dax -> PURPLE 
 wif -> RED 
 lug -> BLUE 
 blicket -> GREEN 
 x1 fep -> [x1] [x1] 
 u1 tufa -> [u1] [u1] 
 x1 zup x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 