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

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

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