Order the key events in the plot of "An Inspector Calls"
1️⃣ Inspector reveals Eva's death
2️⃣ Mr. Birling admits firing Eva
3️⃣ Sheila and Sybil's roles are disclosed
4️⃣ Eric and Gerald's involvement is revealed
5️⃣ Inspector's identity is questioned
6️⃣ A phone call confirms another death