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

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

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