*SUPPORT*
IN: wif zup gazzer OUT: YELLOW GREEN PINK
IN: zup gazzer OUT: GREEN PINK
IN: zup fep dax dax OUT: GREEN GREEN GREEN GREEN GREEN GREEN GREEN GREEN
IN: tufa OUT: BLUE
IN: tufa wif fep OUT: BLUE YELLOW BLUE YELLOW
IN: zup dax fep OUT: GREEN GREEN GREEN GREEN
IN: tufa dax OUT: BLUE BLUE
IN: gazzer OUT: PINK
IN: gazzer dax dax OUT: PINK PINK PINK PINK
IN: wif gazzer dax OUT: YELLOW PINK YELLOW PINK
IN: tufa wif OUT: BLUE YELLOW
IN: zup tufa OUT: GREEN BLUE
IN: tufa tufa fep kiki tufa OUT: BLUE BLUE BLUE BLUE BLUE
IN: zup OUT: GREEN

*QUERY*
IN: wif OUT: YELLOW
IN: tufa dax fep fep OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: wif dax OUT: YELLOW YELLOW
IN: zup dax OUT: GREEN GREEN
IN: wif fep OUT: YELLOW YELLOW
IN: tufa wif dax OUT: BLUE YELLOW BLUE YELLOW
IN: zup kiki tufa fep OUT: BLUE BLUE GREEN
IN: tufa fep OUT: BLUE BLUE
IN: zup dax kiki zup dax fep OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: tufa zup fep fep OUT: BLUE GREEN BLUE GREEN BLUE GREEN BLUE GREEN

*GRAMMAR*
wif -> YELLOW 
 gazzer -> PINK 
 tufa -> BLUE 
 zup -> GREEN 
 x1 kiki x2 -> [x2] [x1] 
 x1 fep -> [x1] [x1] 
 x1 dax -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 