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

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

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