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

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

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