Charlie: "Uh, Alice is a Troper? Yeah, that's true! We know... We have known for quite some time already."
Exaggerated: Bob figured it out figured it out five minutes after meeting Alice, and Charlie made posters for it. Davis had a betting pool going for when Alice was going to come clean. Ellen thinks that Alice believing her secret is safe is just hilarious. Frank is hurt that Alice hasn't come clean yet, etc.
Downplayed: One or two sharp-minded friends of Alice had known about the secret, but everyone else was unaware.
Justified: Alice has some serious trust issues, and is flat-out terrified of talking with her friends about her secret, for fear of ridicule or rejection.
Inverted: Bob knows a secret about Alice, but neither she nor anybody else does.
Alice was afraid that everyone knew, but when she talks about her secret, everyone reacts with shock...
Everyone knew Alice was a troper, only because they were snooping on her.
But the second she leaves the room, everyone immediately goes "I Knew It!"
They knew before that, and snooped because they just needed proof.
Zig Zagged: ???
Averted: Nobody knew.
Lampshaded: "Is there anyone who doesn't already know?! What, was there a memo or something? Acknowledge my shocking revelation, damn it!"
Conversed: "Alice has no idea that we already know, does she?"
Deconstructed: Alice's refusal to come clean drives a wedge between her and her friends.
Reconstructed: When she finally does come clean, she's instantly forgiven.