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

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

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