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

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

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