U-Base irregular preterites

Andar (to walk): Anduv-

Caber (to fit): Cup-

Estar (to be): Estuv-

Haber (helping verb): Hub-

Poder (to be able): Pud-

Poner (to put/place): Pus-

Saber (to know/find out/learn): Sup-

Tener (to have): Tuv