TC2 = TC DUE SEGMENTI

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TC3 = TC TRE SEGMENTI

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TC4 = TC QUATTRO SEGMENTI

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TC5 = TC CINQUE SEGMENTI

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TC2C = TC DUE SEGMENTI CON CONTRASTO

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TC3C = TC TRE SEGMENTI CON CONTRASTO

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TC4C = TC QUATTRO SEGMENTI CON CONTRASTO

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TC5C = TC CINQUE SEGMENTI CON CONTRASTO