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

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

*GRAMMAR*
wif -> GREEN 
 tufa -> YELLOW 
 kiki -> RED 
 blicket -> PURPLE 
 u1 dax x1 -> [x1] [u1] 
 u1 zup u2 -> [u2] [u1] 
 x1 lug x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 