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

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

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