*SUPPORT*
IN: fep kiki dax zup OUT: YELLOW RED GREEN
IN: tufa fep wif dax OUT: RED PURPLE YELLOW
IN: fep tufa fep zup kiki zup fep OUT: YELLOW PURPLE YELLOW GREEN GREEN YELLOW
IN: tufa wif fep OUT: YELLOW PURPLE
IN: fep OUT: YELLOW
IN: fep zup tufa dax wif tufa wif fep OUT: YELLOW PURPLE YELLOW GREEN PURPLE RED
IN: dax fep wif fep wif dax OUT: RED YELLOW RED YELLOW
IN: fep dax OUT: YELLOW RED
IN: fep zup kiki dax zup wif tufa OUT: PURPLE YELLOW GREEN RED GREEN
IN: dax blicket fep OUT: YELLOW RED RED
IN: dax blicket zup OUT: GREEN RED RED
IN: tufa wif zup kiki zup OUT: GREEN PURPLE GREEN
IN: dax OUT: RED
IN: tufa OUT: PURPLE

*QUERY*
IN: dax tufa OUT: RED PURPLE
IN: tufa fep blicket fep OUT: YELLOW PURPLE YELLOW PURPLE YELLOW
IN: fep blicket fep OUT: YELLOW YELLOW YELLOW
IN: zup wif zup OUT: GREEN GREEN
IN: fep blicket zup OUT: GREEN YELLOW YELLOW
IN: dax blicket dax blicket dax OUT: RED RED RED RED RED RED RED
IN: tufa blicket tufa OUT: PURPLE PURPLE PURPLE
IN: dax fep kiki dax wif zup OUT: GREEN RED YELLOW RED
IN: zup OUT: GREEN
IN: fep dax wif dax OUT: RED YELLOW RED

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