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

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

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