Present.
Sing. I can have, thou canst have, he can have;
Plur. We can have, ye can have, they can have.
Preterit.
Sing. I could have, thou couldst have, he could have;
Plur. We could have, ye could have, they could have.
In like manner should is united to the verb.
There is likewise a double Preterit.
Sing. I should have had, thou shouldst have had, he should have had;