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

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

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