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

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

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