Hello! I'd like to know if the following double contractions are used in the United States in daily conversation. Contraction with will have (the future perfect tense): I'll've = I'll have You'll've = You'll have We'll've = We'll have He'll've = He'll have She'll've. = She'll have It'll've. = It'll have They'll've =They'll have won't've = won't have And some contraction with have not (present perfect): I'ven't = I haven't (+past participle) You'ven't. = You haven't (+past participle) We'ven't. = We haven't (+past participle) And I'm not quite sure about these ones: He'sn't = He hasn't(+past participle) She'sn't = She hasn't (+past participle) It's'n't = It hasn't (+ past participle) They'ven't = They haven't (+past participle) And this one that just came up to my mind It'sn't = It's not/it isn't I know those aren't written but, are those used in daily conversation? And I'd like to know if I may be provided with its pronunciations as well. Thank you.