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

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

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