| 21. | Usually, necessity and sufficiency relate conditions of the same kind.
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| 22. | Mere existence of sources is a necessity, not a sufficiency.
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| 23. | Another concept that contributed to the HSM was the sufficiency principle.
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| 24. | Participants learn such skills as self-sufficiency, unarmed combat.
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| 25. | Xavier was also known for his attempts at self-sufficiency.
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| 26. | The court should carefully evaluate the sufficiency of the samples.
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| 27. | We must learn self-sufficiency and prepare for a long struggle.
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| 28. | Social programs can promote individual self-improvement and self-sufficiency.
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| 29. | But the judge evaluated neither its credibility nor its sufficiency.
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| 30. | Their toughness comes from a tradition of self-sufficiency and isolation.
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