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

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

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