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

*QUERY*
IN: dax blicket wif fep gazzer lug blicket fep OUT: YELLOW RED GREEN PURPLE GREEN
IN: dax dax blicket dax tufa wif tufa lug OUT: PURPLE RED YELLOW YELLOW YELLOW
IN: lug lug blicket wif OUT: PURPLE PURPLE RED
IN: wif blicket wif tufa wif OUT: RED RED RED
IN: dax OUT: YELLOW
IN: wif blicket fep fep tufa lug tufa lug OUT: RED PURPLE PURPLE GREEN GREEN
IN: wif fep fep gazzer lug lug wif OUT: RED GREEN GREEN PURPLE PURPLE RED
IN: fep dax dax fep fep tufa dax OUT: YELLOW GREEN YELLOW YELLOW GREEN GREEN
IN: lug blicket fep blicket fep blicket wif OUT: PURPLE GREEN GREEN RED
IN: dax blicket fep dax tufa wif OUT: YELLOW RED GREEN YELLOW

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