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

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

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