Example sentences of "has been work [prep] [num] [noun] " in BNC.

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1 The system using freezing instead of hot branding has been working for 12 years and the firm has now won a Royal Warrant .
2 Professor Reg King has been working for twenty years on developing a foolproof bank cashpoint machine .
3 I mean , dammit all , Charles has been working for 40 years and I 've been working for 22 ’ ) .
4 Dr Jenkins , from Leicester University , has been working on two compounds found in English yew and has recently been joined by Dr Nick Lawrence of Manchester University .
5 The start-up company has been working on four lines of development , all using its own proprietary 64-bit Sparc implementation and the VME bus .
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