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

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

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