do: Base/infinitive; used for existing tense apart from with 3rd individual singular subjects (in addition to the singular they ‘Do’ and ‘Does’ can also emphasize the validity and assertion of statements. This is particularly valuable in responses to doubts or when just one needs to affirm an expression emphatically. https://dmozbookmark.com/story20450056/little-known-facts-about-does-proleviate-help-with-shoulder-pain