Morphological segmentation: think and thought

[Nonverbis]

There are two words: think and thought.

Could you tell me what roots are here and what suffixes?

 

[5jj]

There are two words: think and thought.

Mark off the words asked about:

There are two words, 'think' and 'thought'.
There are two words: think and thought.


Here is the etymology of these words. They contain no suffixes.