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

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

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