Verb conjugation of "mutilate" in English

If I see that the case study does not progress as I wish, I will summarize the data myself and let the University sign it. Of course, you will receive the study immediately. All the best meanwhile.
I usually do not travel, and if I do, then only to England, when I visit my parents who live in a suburb of London. I can not afford to travel too much, because it is a very large expense.
In school, we now are learning the grammar part, more specifically, the participles and so on. I understand it at all, but the conjugations, boy they are tough. A lot of patience is needed.