When you're about to trail off of a sentence, is it ok to have two periods, or is it always three? <br/>For instance: <br/><br/>This is my sentence.. <br/><br/>or <br/><br/>This is my sentence... <br/><br/>and also, is there a difference with before a sentence: <br/><br/>..This is my sentence <br/><br/>...This is my sentence <br/><br/><br/>is it EVER ok to have 2 periods instead of 3?