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

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

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