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

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

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