/usr/include/regina-normal/enumerate/ is in regina-normal-dev 4.95-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/regina-normal/enumerate/ndoubledescription-impl.h
/usr/include/regina-normal/enumerate/ndoubledescription.h
/usr/include/regina-normal/enumerate/ndoubledescription.tcc
/usr/include/regina-normal/enumerate/ndoubledescriptor.h
/usr/include/regina-normal/enumerate/ndoubledescriptor.tcc
/usr/include/regina-normal/enumerate/nenumconstraint.h
/usr/include/regina-normal/enumerate/nhilbertcd-impl.h
/usr/include/regina-normal/enumerate/nhilbertcd.h
/usr/include/regina-normal/enumerate/nhilbertcd.tcc
/usr/include/regina-normal/enumerate/nhilbertdual-impl.h
/usr/include/regina-normal/enumerate/nhilbertdual.h
/usr/include/regina-normal/enumerate/nhilbertdual.tcc
/usr/include/regina-normal/enumerate/nhilbertprimal-impl.h
/usr/include/regina-normal/enumerate/nhilbertprimal.h
/usr/include/regina-normal/enumerate/nhilbertprimal.tcc
/usr/include/regina-normal/enumerate/nmaxadmissible-impl.h
/usr/include/regina-normal/enumerate/nmaxadmissible.h
/usr/include/regina-normal/enumerate/nmaxadmissible.tcc
/usr/include/regina-normal/enumerate/ntreeconstraint.h
/usr/include/regina-normal/enumerate/ntreelp-impl.h
/usr/include/regina-normal/enumerate/ntreelp.h
/usr/include/regina-normal/enumerate/ntreelp.tcc
/usr/include/regina-normal/enumerate/ntreetraversal-impl.h
/usr/include/regina-normal/enumerate/ntreetraversal.h
/usr/include/regina-normal/enumerate/ntreetraversal.tcc
/usr/include/regina-normal/enumerate/ntypetrie.h
/usr/include/regina-normal/enumerate/ordering.h