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

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

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