The parameters for this template come in pairs of the word without its diatrical markings, followed by the word with them. For a normal verb, this template takes 8 parameters. 4 pairs in the order, present active, infinitive, perfect active, supine. A deponent verb will have only six parameters, no supine.
To add (irregular) to the end of a word, add the named parameter pattern= to the end. So, an irregular verb with no supine would have 7 parameters, and with a supine would have 9. The value of the last parameter doesn't matter, but the most common possibilities are "irregular", ""semi-deponent" or "no passive".