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

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

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