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

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

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