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

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

*GRAMMAR*
zup -> RED 
 kiki -> YELLOW 
 dax -> GREEN 
 fep -> PURPLE 
 u1 wif u2 -> [u1] [u2] 
 x1 blicket x2 -> [x2] [x1] 
 x1 tufa u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 