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

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

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