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

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

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