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

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

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