Specific time ago with breakpoints?

I need to display exact time ago in counter fashion, like:

13s ago
1min 3s ago
1h 33min ago
13h ago
1d ago
1d 3h ago
2w 3d ago
3w ago
1m 3w ago
3m ago
1y ago
1y 6m ago
2y ago
3y ago

I just noticed your breakpoint strings have only one value assignment, not for example minutes and seconds separately?
