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

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

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