*SUPPORT*
IN: gazzer OUT: RED
IN: fep dax gazzer OUT: GREEN RED
IN: gazzer dax lug OUT: RED PURPLE
IN: lug OUT: PURPLE
IN: lug dax blicket OUT: PURPLE BLUE
IN: fep zup blicket zup gazzer dax gazzer OUT: GREEN BLUE RED RED BLUE GREEN
IN: blicket OUT: BLUE
IN: gazzer tufa blicket OUT: RED BLUE
IN: gazzer tufa lug OUT: RED PURPLE
IN: fep tufa blicket OUT: GREEN BLUE
IN: blicket gazzer lug tufa fep OUT: BLUE RED PURPLE GREEN
IN: blicket blicket OUT: BLUE BLUE
IN: blicket blicket zup gazzer OUT: BLUE BLUE RED BLUE
IN: fep OUT: GREEN

*QUERY*
IN: lug dax lug OUT: PURPLE PURPLE
IN: fep zup fep gazzer tufa gazzer OUT: GREEN GREEN RED RED GREEN
IN: gazzer dax fep OUT: RED GREEN
IN: fep dax fep OUT: GREEN GREEN
IN: blicket dax fep OUT: BLUE GREEN
IN: blicket dax gazzer OUT: BLUE RED
IN: lug tufa fep OUT: PURPLE GREEN
IN: gazzer dax gazzer OUT: RED RED
IN: blicket tufa blicket OUT: BLUE BLUE
IN: lug zup gazzer OUT: PURPLE RED PURPLE

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