ana- vs co-

ana-

prefix
  • apiece 

  • backward 

  • excessive 

  • on 

  • again 

  • up 

co-

prefix
  • to the same degree 

  • together; mutually; jointly 

  • partner or subordinate in an activity 

  • of the opposite, of the counterpart; dual 

How often have the words ana- and co- occurred in a corpus of books? (source: Google Ngram Viewer )