Using the Latin Supine for Verbal Nouns

Using the Latin Supine for Verbal Nouns The supine is a Latin verbal noun. Since it is a noun it has a declension, but it only appears in the accusative and ablative singular. To decline the supine, use the fourth declension. Since you only need the accusative and ablative singular, the only endings you use are -um and -u. The tricky part, if you dont have a dictionary, is figuring out the stem to which to add the -um (used for purpose with verbs of motion; translated like an infinitive) or -u (used with adjectives and sometimes verbs). This depends on the conjugation to which the verb belongs. If you have a dictionary, the fourth principal part is usually the supine, but with an  us ending. To Form  the Supine for Verbs in the 1st conjugation - remove ending but keep thematic vowel (a); add a -t- and then add the 4th declension endings (either -um or -u), as in paratum.2nd conjugation - remove ending and thematic vowel (e); add -it- and then add the 4th declension endings (either -um or -u), as in habitum3rd conjugation, you must deal with irregularities. The supine of mittere is missum, but the supine of capere is captum. Although this may not be entirely predictable, the supine is usually used as the fourth principal part in the dictionary entry for the verb, so it should be familiar.4th conjugation - remove ending but keep thematic vowel (i); add a -t- and then add the 4th declension endings (either -um or -u), as in auditum. Examples of the Supine Venerunt visum they came to see.Mirabile dictu wondrous to say. Can you figure out why you would probably not use the supine to say they walk to work using  4th declension nouns?