To do or be involved in doing; to do (often something mischievous or inappropriate).
To depend on, to be the choice of.
Used to politely ask for someone else to do something.
Used to show the possibility that something might happen.
Used to politely ask for permission to do something.
Used to suggest something.
simple past tense of can
Used as a past subjunctive (contrary to fact).
Something that could happen, or could be the case, under different circumstances; a potentiality.