Let's say for the last 1 year, I have taught my cousin for the first 6 months and my sibling for the next 6 months.<br/><br/>Can I say:<br/><br/>I have taught for 1 year with my cousin and sibling.<br/><br/>I have taught them for half a year each.<br/><br/>I have taught both of them for 6 months.<br/><br/>I have taught my cousin and sibling 6 months each.<br/><br/>Which ones convey accurately?<br/><br/>Thanks