And Iraq, ever unpredictable, has from time to time taken its oil exports off the market.
Ever since then, from time to time a new virus has come along to take advantage of this new, very densely populated, crowded species – humans – that it can now spread between much more easily.
Ever since Gernot Bronsert and Sebastian Szarzy, AKA Modeselektor, announced back in June that they were going to close the doors on their much loved 50 Weapons imprint, we've been walking around in a daze, not really able to make eye contact with anyone, weeping, ever so slightly, from time to time, imagining what could have been and reminiscing over what once was.
"So much ado, so much stress, so much passion and repetition about a handkerchief," wrote Thomas Rymer in 1693, and his opinion that the tragedy is a "bloody farce" has been echoed from time to time ever since.
"We had a laugh about it, he's a very charismatic character and we've kept in touch from time to time ever since".
The 15th anniversary was commemorated in an unconventional manner as the network facilitated a series of re-enactments of the seven historic Lincoln-Douglas debates of 1858, which were televised from August to October 1994, and have been rebroadcast from time to time ever since.
Does she ever rant at sexist comments on TV? "From time to time".
Somewhat comically, this point of view has been widely and consistently peddled by writers and publications which hardly ever stop yelling about immigration, only pausing from time to time to complain that they are being gagged, before resuming a deafening roar of outrage".
A handy contraction for "model of the theory of" that has been proposed from time to time without ever getting serious traction is "homologue of".
(Not that Medvedev was ever truly liberal; he just acted that way, from time to time, as if in a dumb show for foreign consumption).
