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

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

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