Instructions: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Input: Sentence1: Susie got a brand new pair of shoes. Sentence2: She loved them. Sentence3: All the sudden they ripped. Sentence4: She realized they were too cheap. Sentence5: She had to toss them.
Output:
Susie