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

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

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