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

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

*GRAMMAR*
dax -> PURPLE 
 tufa -> PINK 
 wif -> GREEN 
 zup -> RED 
 u1 lug u2 -> [u1] [u2] 
 x1 kiki -> [x1] [x1] 
 x1 fep x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 