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

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

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