thank you.
you are right about carefree. I must have one other clue wrong. I don't understnd why incrust is the solution to the other one but it will fit.
Thank you very much.
I realised carefree was right when I read the first response but although Incrust fitted (I started my entry with capital i which looks like l on this forum) I just didn't understand why it was right. Now I know. Cru and inst are new to me. I have learned. Many thanks.