The Thai boys trapped in a cave have exchanged emotional letters with their parents, for the first time since their ordeal began two weeks ago, BBC reports.

“Don’t worry, we are all strong,” one child said in a note. “Teacher, don’t give us lots of homework!” he joked.

The team’s coach apologised to parents in a separate letter, but parents wrote that he should not blame himself.

The 12 boys and the coach were exploring the cave when they became trapped by flood waters on 23 June.

The handwritten letters from the group were handed to British divers on Friday and released on the Thai Navy Seal Facebook page on Saturday. “Don’t worry about me, I’m safe.” a boy nicknamed Pong said.

Another wrote: “Nick loves Mum and Dad and siblings. If I can get out, Mum and Dad please bring me mookatha (Thai barbecue) to eat.”