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

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

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