Please look at the following
1) I wish you could have come to the party
There's a friend of mine who couldn't come to the party and I am now discussing with him about that and wishing. So can I use the sentence #1 for the following two scenarios?
a) I know you couldn't come to the party.-----I wish you could have come.
b) I know you couldn't have come.---------I wish you could have come.
Is the usage of sentence #1 for the above two scenarios right? If not, then please tell me what sentence must be used for both #a and #2? I mean does sentence #1 work for both the scenarios?