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

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

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