Marriage by exchange.
Marriage by capture is where a man forcibly marries a woman.
Marriage by intrusion is where a woman forcibly marries a man.
Marriage by probation allow a man to stay at woman place for weeks together after which if they decide to get married.
Marriage by purchase or giving b ride price. A man is required to give an agreed amount of cash/kind to the parents of the bride as price which usually varies according to the physical beauty and utility of the bride.
Marriage by service is where the man serves at his father-in-law's house before marriage.
Marriage by trial.
Marriage by mutual consent.
Marriage by elopement.