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

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

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