| 11. | "It's just like perfecting their golf swing.
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| 12. | He traveled extensively performing and perfecting his skills as a musician.
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| 13. | Here he remained five years, meantime perfecting himself in English.
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| 14. | In the meanwhile Grayson had been perfecting his fine ruling work.
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| 15. | Nicolosi is now perfecting the process begun by Michelangeli ."
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| 16. | They played together guitar and autoharp, perfecting their musical style.
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| 17. | She has been perfecting her artistic skills from an early childhood.
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| 18. | Walli kept on and on perfecting his guitar solos as well.
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| 19. | She has spent the last 27 years perfecting her trade.
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| 20. | For three years it laid low, perfecting the technology.
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