import re
 
input_var = """THE SONNETS
 
                    1
 
From fairest creatures we desire increase,
That thereby beauty’s rose might never die,
But as the riper should by time decease,
His
 
she hies,             1189
And yokes her silver doves; by whose swift aid
Their mistress mounted through the empty skies,
In her light chariot quickly is convey’d;           1192
  Holding their course to Paphos, where their queen
  Means to immure herself and not be seen."""
 
pattern = {r'\s{3,}\d+\n' : '',
           r'\n' : ' '}
output_var = input_var
for reg, repl in pattern.items():
  output_var = re.sub(reg, repl, output_var)
 
print(output_var)

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