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

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

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