Season One: 1978-1979

-episode 4. "Bobby's Acting Career"
-episode 7. "High School Reunion"
-episode 8. "Paper Marriage"
-episode 14. "Louie Sees the Light"
-episode 16. "Bobby's Big Break"

Season Two: 1979-1980

-episode 27. "Reverend Jim: A Space Odyssey"
-episode 33. "Elaine's Secret Admirer"
-episode 34. "Alex's Romance"
-episode 35. "Latka's Revolting"
-episode 40. "Guess Who's Coming for Brefnish?"

Season Three: 1980-1981

-episode 50. "Elaine's Strange Triangle"
-episode 51. "Bobby's Roomate"
-epsiode 63. "Louie Bumps Into an Old Lady"
-episode 64. "Latka the Playboy"
-episode 66. "Fledgling"

Season Four: 1981-1982

-episode 70. "Mr. Personalities"
-episode 78. "I Wanna Be Around"
-episode 79. "Bobby Doesn't Live Here Anymore"
-episode 84. "The Unkindest Cut"
-episode 88. "Cooking for Two"

Season Five: 1982-1983

-episode 93. "Jim's Inheritance"
-episode 102. "Crime and Punishment"
-episode 104. "Alex's Old Buddy"
-episode 108. "Jim's Mario's"
-episode 112. "A Grand Gesture"

I'm impressed that you know the episodes names. I'm not that good with that.