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

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

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