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

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

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