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

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

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