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

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

*GRAMMAR*
wif -> PINK 
 tufa -> PURPLE 
 zup -> GREEN 
 fep -> RED 
 x1 lug x2 -> [x1] [x2] 
 x1 kiki u1 -> [u1] [x1] 
 x1 dax -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 