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

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

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