How to spot the difference between regular and irregular verbs

How to spot the difference between regular and irregular verbs?

The rule:
The past forms for irregular verbs either change completely from the base form(the infinitive) or remain the same in all three forms, or the past forms change from the infinitive but the simple and participle form do not en in “ed”.
How to spot the difference between regular and irregular verbs
All verbs, whether regular or irregular, have five forms [often called principal parts]. These forms are the infinitive, simple present, simple past, past participle, and present participle.

Infinitive	Simple Present	Simple Past	Past Participle	Present Participle
to laugh	laugh(s)	laughed	laughed	laughing
to start	start(s)	started	started	starting
to wash	wash(es)	washed	washed	washing
to wink	wink(s)	winked	winked	winking

In contrast, the simple past and past participle of irregular verbs can end in a variety of ways, with absolutely no consistent pattern.

Infinitive	Simple Present	Simple Past	Past Participle	Present Participle
to drive	drive(s)	drove	driven	driving
to feel	feel(s)	felt	felt	feeling
to put	put(s)	put	put	putting
to swim	swim(s)	swam	swum	swimming