Main Cast
Seasons
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Season 1
7 episodes
1977
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Season 2
9 episodes
1978
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Season 3
9 episodes
1979
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Season 4
8 episodes
1980
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Season 5
9 episodes
1981
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Season 6
9 episodes
1982
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Season 7
8 episodes
1983
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Season 8
9 episodes
1984
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Season 9
6 episodes
1985