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

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

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