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

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

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