Universal grammar suggests that all humans are born with a basic set of principles and parameters that allow them to learn any language. It is through exposure to a particular language that the principles and parameters are developed. Principles are the options available for all languages and parameters are language-specific rules. When it comes to the sounds in a language, universal grammar provides that humans are born with the ability to produce speech sounds and the English grammar is comprised of numerous speech sounds. For example, English speaker are able to produce the "th-sound" that is not found in the grammar of other languages because their parameters are not set for such a feature.
Universal grammar also provides for the innate ability to combine speech sounds to form words. The English grammar has many combined speech sounds. It is the parameters of the grammars of individual languages that do not allow certain sound combinations to form words. For example, in English grammar the "t-sound" and the "r-sound" can be combined at the start of a word to form the word "truck" but they can not be combined at the end of any word in English grammar. The similarity here between universal grammar and English grammar is that English grammar applies the principle of sound combinations when not disallowed by English parameters.
English grammar has rules that specify the order of words in sentences. Similarly, universal grammar states that all languages have rules specifying the order of words in sentences. English is a subject-verb-object language; these are the parameters of English grammar. The parameters of all languages are not the same. Some languages have parameters set for verb-subject-object, and some for subject-object-verb. There are examples of languages in every possible combination and they all follow the idea of parameters introduced by universal grammar.