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

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

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