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

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

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