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

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

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