Main Cast
Seasons
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Season 1
6 episodes
1979
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Season 2
7 episodes
1980
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Season 3
6 episodes
1981
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Season 4
8 episodes
1982
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Season 5
8 episodes
1983
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Season 6
6 episodes
1984
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Season 7
6 episodes
1986
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Season 8
6 episodes
1987
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Season 9
6 episodes
1988