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

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

*GRAMMAR*
fep -> GREEN 
 zup -> PINK 
 dax -> BLUE 
 wif -> YELLOW 
 u1 kiki u2 -> [u1] [u2] 
 x1 gazzer x2 -> [x1] [x2] 
 x1 tufa x2 -> [x2] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 