*SUPPORT*
IN: tufa kiki zup blicket OUT: GREEN YELLOW RED
IN: tufa blicket OUT: GREEN YELLOW
IN: tufa zup wif gazzer tufa OUT: PURPLE GREEN GREEN
IN: tufa zup wif OUT: PURPLE GREEN
IN: kiki zup blicket OUT: YELLOW RED
IN: wif blicket OUT: PURPLE YELLOW
IN: wif tufa zup wif OUT: PURPLE PURPLE GREEN
IN: tufa zup wif gazzer wif OUT: PURPLE GREEN PURPLE
IN: kiki zup tufa OUT: GREEN RED
IN: kiki OUT: RED
IN: wif OUT: PURPLE
IN: tufa zup blicket OUT: YELLOW GREEN
IN: blicket zup wif OUT: PURPLE YELLOW
IN: tufa zup wif gazzer blicket OUT: PURPLE GREEN YELLOW

*QUERY*
IN: wif zup blicket OUT: YELLOW PURPLE
IN: blicket blicket tufa zup kiki OUT: YELLOW YELLOW RED GREEN
IN: tufa gazzer wif gazzer kiki OUT: GREEN PURPLE RED
IN: tufa OUT: GREEN
IN: wif zup kiki OUT: RED PURPLE
IN: blicket tufa zup blicket OUT: YELLOW YELLOW GREEN
IN: tufa zup tufa OUT: GREEN GREEN
IN: blicket zup kiki gazzer wif OUT: RED YELLOW PURPLE
IN: blicket blicket wif gazzer blicket gazzer kiki OUT: YELLOW YELLOW PURPLE YELLOW RED
IN: wif zup wif OUT: PURPLE PURPLE

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