scriptSplits = []
actSplits = []

curCharacter = None=
curDialog = ""=
for line in scriptLines:=
    if line[0:3] == "ACT":
        if scriptSplits:
            actSplits.append(scriptSplits)
            scriptSplits = []

    if line in characters:
        if curCharacter is not None:
            scriptSplits.append((curCharacter, curDialog))
            curDialog = ""
        curCharacter = line
    else:
        curDialog += line + "\n"

scriptSplits.append((curCharacter, curDialog))
actSplits.append(scriptSplits)

iagoSpeech = ""

for act in actSplits:
    print("\tNEW ACT")
    for (speaker, dialog) in act:
        if speaker == "IAGO":
            iagoSpeech += dialog

print(iagoSpeech)