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  1. while(1):
  2.  a=[c for c in input() if c.isalnum()]
  3.  print(' '.join(a+b for a,b in zip(a,a[1:])))
Runtime error #stdin #stdout #stderr 0.12s 23384KB
comments (?)
stdin
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Ab
Abc
Abcd
E?h?
Blurry vision
We're #1!
I'm an example!
This is _not_ legible
(a*b*c)+5^-x
??a_%,1!=z#@
stdout
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Ab
Ab bc
Ab bc cd
Eh
Bl lu ur rr ry yv vi is si io on
We er re e1
Im ma an ne ex xa am mp pl le
Th hi is si is sn no ot tl le eg gi ib bl le
ab bc c5 5x
a1 1z
stderr
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Traceback (most recent call last):
  File "./prog.py", line 2, in <module>
EOFError: EOF when reading a line
https://ideone.com/dxJU8e
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
public

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