合同一式两份到一式十份用英语如何表示？

in triplicate, in three copies, in three folds一式三份

in quadruplicate, in four copies, in four folds一式四份

in quintuplicate, in five copies, in five folds 一式五份

in sextuplicate, in six copies, in six folds 一式六份

in septuplicate, in seven copies, in seven folds 一式七份

in octuplicate, in eight copies, in eight folds 一式八份

in nonuplicate, in nine copies, in nine folds 一式九份

in ten copies, in ten folds 一式十份