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

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

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