*SUPPORT*
IN: wif kiki zup OUT: GREEN PURPLE
IN: zup OUT: GREEN
IN: wif tufa dax OUT: PURPLE BLUE
IN: dax OUT: BLUE
IN: lug kiki lug OUT: YELLOW YELLOW
IN: dax gazzer wif OUT: PURPLE BLUE BLUE
IN: dax zup OUT: BLUE GREEN
IN: zup tufa dax OUT: GREEN BLUE
IN: wif lug kiki dax tufa wif OUT: PURPLE BLUE PURPLE YELLOW
IN: lug gazzer wif OUT: PURPLE YELLOW YELLOW
IN: zup wif OUT: GREEN PURPLE
IN: dax lug OUT: BLUE YELLOW
IN: wif kiki zup kiki wif OUT: PURPLE GREEN PURPLE
IN: dax zup dax wif OUT: BLUE GREEN BLUE PURPLE

*QUERY*
IN: wif tufa zup gazzer zup OUT: GREEN PURPLE GREEN PURPLE GREEN
IN: zup zup tufa wif OUT: GREEN GREEN PURPLE
IN: lug zup OUT: YELLOW GREEN
IN: wif OUT: PURPLE
IN: wif kiki zup wif gazzer wif OUT: PURPLE GREEN PURPLE GREEN PURPLE PURPLE
IN: lug gazzer dax OUT: BLUE YELLOW YELLOW
IN: wif kiki zup kiki dax OUT: BLUE GREEN PURPLE
IN: wif kiki zup gazzer zup gazzer dax OUT: BLUE GREEN GREEN GREEN GREEN GREEN GREEN PURPLE
IN: dax gazzer dax OUT: BLUE BLUE BLUE
IN: dax zup tufa wif OUT: BLUE GREEN PURPLE

*GRAMMAR*
zup -> GREEN 
 dax -> BLUE 
 lug -> YELLOW 
 wif -> PURPLE 
 u1 kiki x1 -> [x1] [u1] 
 x1 gazzer u1 -> [u1] [x1] [x1] 
 u1 tufa x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 