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

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

*GRAMMAR*
dax -> RED 
 blicket -> YELLOW 
 fep -> GREEN 
 gazzer -> PURPLE 
 x1 lug x2 -> [x2] [x1] 
 u1 tufa -> [u1] [u1] [u1] 
 u1 wif u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 