11.   It just must be a strange coincidence.

12.   Or could it all just be some strange coincidence?

13.   Our political conventions, by some strange coincidence, are held the same year as the Summer Olympics.

14.   So this is how pieces of history fall out of the sky, as strange coincidences.

15.   Strange coincidences connect these people.

16.   That is almost entirely a strange coincidence, since the races were run at varying distances and two of the victories came on the grass.

17.   The anything-can-happen plots rely on strange coincidences and increasingly baffling random acts of passion.

18.   Yet strange coincidences and happy accidents are part of the history of every successful technology.

19.   As if by strange coincidence, their offices are in the same building, four floors away from each other.

20.   But it seems a strange coincidence.