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

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

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