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

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

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