I havent saw them in years vs I havent seen them in years

Some examples from the web:

• I havent's seen Mr Shane all day.
• Its that I havent written the ending.
• I havent heard from him in several days.
• I said i havent seen Marty lately,...
• I feel tired, but that's because I havent slept well.
• I havent received any complaints, thus far.
• I havent got a house, I sleep under the bridges.
• Witnesses saw them together at the diner.
• Security saw them on CCTV acting suspicious.
• Detective Parraguez saw them together just now.
• I saw them crash through a burning wall.
• A neighbor saw them go in, never saw them come out.
• My oldest son Felipe saw them being pulled away in a van.
• I saw them come out in pairs.
• The fire saw them running and intercepted them.
• The fire saw them running and intercepted them.
• And that's when I saw them.
• We saw them appear in multiple timelines.
• Even though we just saw them.
• I saw them rolling their eyes when the sister was testifying.

Some examples from the web:

• I said i havent seen Marty lately,...
• But besides Marcel l haven't seen them in years.
• But I haven't seen them in years.
• She has an impulse control problem, and I haven't seen them in years.
• l haven't seen them in years.
• I havent's seen Mr Shane all day.
• Its that I havent written the ending.
• I havent heard from him in several days.
• I feel tired, but that's because I havent slept well.
• I havent received any complaints, thus far.
• I havent got a house, I sleep under the bridges.
• havent seen her in a long time... and...
• Haven't seen them since Southampton.
• I have seen them succeed, I've seen them fail very quickly.
• We haven't seen them in hours.
• I've never seen them perform.
• I'm pretty sure I've seen them all.
• No, the troopers would have seen them.
• I trust you've seen them before.
• I've seen them in the laundry room, drying.