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

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

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