I've been given some data that looks like this:
Name Docs
Name1 doc1
Name1 doc3
Name2 doc2
Name2 doc3
Name3 doc1
Name4 doc1
Name4 doc2
Name4 doc3
Name5 doc1
Name5 doc3
Name6 doc3

and I need it to look like this:

Name Doc1 Doc2 Doc3
Name1 X X
Name2 X X
Name3 X
Name4 X X X
Name5 X X
Name6 X

There are thousands of records but only three different doc types.
For each Name, all three docs might be there, or only one, or
any combination of two of them.