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

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

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