117 topics across 3 levels
Cannot do something no matter how hard one tries
Giving a reason based on an observed situation (seeing that / since)
Conditional regret about the past (if only... had...)
Hypothetical condition (if)
Worry or fear that something might happen (afraid that)
Might / perhaps (uncertain possibility)
Practically amounts to / is as good as
It is natural that / it's the way things are (bound to)
There is no way / there is a possibility that
Only after doing something
Even while doing something (contradictory action)
Rather than (doing that), it's better to... (if it comes to that)
