*SUPPORT*
IN: tufa zup OUT: YELLOW YELLOW YELLOW
IN: wif OUT: PURPLE
IN: fep zup OUT: BLUE BLUE BLUE
IN: gazzer wif gazzer OUT: GREEN PURPLE GREEN
IN: wif wif zup OUT: PURPLE PURPLE PURPLE PURPLE
IN: fep lug OUT: BLUE BLUE BLUE BLUE
IN: tufa zup blicket wif OUT: PURPLE YELLOW YELLOW YELLOW
IN: tufa zup blicket gazzer OUT: GREEN YELLOW YELLOW YELLOW
IN: fep OUT: BLUE
IN: fep fep zup OUT: BLUE BLUE BLUE BLUE
IN: wif blicket wif lug OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: tufa OUT: YELLOW
IN: gazzer wif fep OUT: GREEN PURPLE BLUE
IN: fep gazzer zup OUT: BLUE GREEN GREEN GREEN

*QUERY*
IN: wif tufa OUT: PURPLE YELLOW
IN: gazzer zup OUT: GREEN GREEN GREEN
IN: gazzer blicket fep OUT: BLUE GREEN
IN: wif zup OUT: PURPLE PURPLE PURPLE
IN: gazzer zup blicket wif OUT: PURPLE GREEN GREEN GREEN
IN: gazzer gazzer blicket wif OUT: PURPLE GREEN GREEN
IN: wif zup blicket tufa OUT: YELLOW PURPLE PURPLE PURPLE
IN: gazzer blicket gazzer lug OUT: GREEN GREEN GREEN GREEN GREEN GREEN GREEN GREEN
IN: tufa blicket gazzer blicket wif OUT: PURPLE GREEN YELLOW
IN: gazzer tufa blicket fep OUT: BLUE GREEN YELLOW

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