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

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

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