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

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

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