Stuck on four, help, please. 51a Mythological beings who die in the tre which they inhabited. (10) ?A?A?R?A?S. 56a Sheer voile-like textile. (5) N?N?N. 29d Another name for a family tree. (6) S?E?M?. 31d Protective tool used by a sailmaker. (4) ?A?M. Thanks in advance for any help.