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

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

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