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

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

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