# suffix length:
n = 2
 
# create an empty dictionary:
my_dict = {}
 
## open the file:
#with open("file.fna") as file:
 
## read the file line by line:
#for line in file:
 
# to demonstrate it in ideone.com, we read from the standard input instead of a file
for _ in range(4):
	line = input()
 
	# split at whitespace and take the last word:
	word = line.split()[-1]
 
	# add entry to dictionary: all but the last character -> key; last character -> value
	my_dict[word[:-n]] = word[-n:]
 
print(my_dict)

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

cmVhZCAxIEFUVENUCnJlYWQgMiBDQVRUQwpyZWFkIDMgQ0NUQVQKcmVhZCA0IEFBQUNBCg==

read 1 ATTCT
read 2 CATTC
read 3 CCTAT
read 4 AAACA