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

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

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