Words that start with 't' and contain 'bob'

What's the maximum number of words you can construct from words that start with 't' and include 'bob'?
In total, it is feasible to make exactly 5 words.

What is the longest word you can create using words that start with 't' and include 'bob'?
The largest word that's possible to derive from this list is 'tantarabobus', which is made up of 12 characters.