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

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

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