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

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

*GRAMMAR*
blicket -> YELLOW 
 zup -> GREEN 
 fep -> RED 
 dax -> PURPLE 
 u1 lug u2 -> [u1] [u2] [u1] 
 x1 gazzer x2 -> [x2] [x1] 
 u1 tufa x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 