The concord or agreement may be made of an estate and fee-simple, fee-tail, or life or for years; it may be also of divers remainders, and that to them that are no parties but strangers to the fine; it may be also single or double, with a render back again of some estate of the same land or some rent out of it; so a concord may have in it reservation of rent, a clause of distress or nomine poenae and a warranty.