import re
 
input = r"""hello this is a car
<hamburguer>this car is very good<\hamburguer>I want to fill this rules 
this pencil is red and very good, the movie was very fine
<red>the color is blue and green<\red>
<blue>your favorite color is the yellow<\blue>you want this<red>my smartphone is very expensive<\red>"""
 
lst = {}
for item in re.finditer(r'<([^>]+)>([^>]+)<\\\1>', input):
	lst.setdefault('<%s>' % item.group(1),[]).append(item.group(2))
 
print(lst)

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