He has not publicly withdrawn support for Yanukovych but if he does, it may shake up an already competitive race.
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Sometimes the role is so ingrained it may take more effort to shake.
Isner may have found it difficult to shake off the "marathon man" tag but there are some other things that have stuck with him by his own choosing -- like his love for wrestling.
Mr Henderson is an experienced financial manager, but GM may need someone more inspiring to shake it out of its consensual, bureaucratic ways.
The 23-year-old DJ released "Harlem Shake" last May, but it wasn't until Feb. 2 that the first video emerged featuring a silly dance to the song. (A YouTube denizen known as Filthy Frank gets that credit.) A version by a crew of Australian skateboarders established the jump-cut blueprint, and an entry by employees of Maker Studios, a digital media company, inspired other office imitators.
Such paternalism may have helped to shake Turkey out of its Ottoman torpor, but it goes down badly in liberal-democratic modern Europe.
So, whether or not you knew about that tiny shake or jitter in your hand, you may soon make use of it to replace that old password scribbled on that aging yellow sticky note.
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It may be the Note line's claim to fame (and existence), but we can't shake the feeling that the S Pen is now just a relic, a built-in accessory necessary to distinguish the very first Note as a new category.
But, as was discovered in the last big shake-up of financial regulation in 1986, applying the rulebook may take different skills from writing it.
In fact, it may be the upper-house election, scheduled for July 29th, that offers Mr Koizumi his biggest chance to shake up Japanese politics.
But now it has just 38 pupils and there are deepening fears about what the future may hold under the government's planned shake-up in school funding.
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