It's an irregular verb:
Begin / Began / Begun
I begin work every day at 9 in the morning.
I began work yesterday a little later than normal.
I've just begun the class. Please take a seat.
Identify, ignore, impress and improve are some examples of regular verbs that begin with ISome more examples for you are increase, infuse, inspect, instruct, introduce, invent and itch.
Some regular verbs that begin with the letter V are vacuum, vanish and venture.Some more examples are visit, volunteer, vote and vouch.
A couple of regular verbs beginning with Z are zeroed and zigzag.Some more are zip, zone and zoom.
Kick, kill and kiss are three examples of regular verbs starting with K.Knock and knot are two more examples.
Some regular verbs that start with N are nag, nail and nap.Some others are nest, nod, note and number.
Wait, walk, warm, wash and wave are some regular verbs that begin with W.Some more are weigh, whine, whisper, wink, wish, work, worry, wrestle and wriggle.
By adding -ed to regular verbs. Irregular verbs have a different word for their past tense and these must be learned - there is nothing that they all have in common like the regular verbs.
Maintain, manage and march are three examples of regular verbs that begin with M.To give you some more, there is also mark, marry, measure, mention, mine, moan, move, murder and mutter.
Some examples of regular verbs begiining with O are obey, observe obtain and offend.Some more examples are offer, open, operate and owe.
"Joined" is a regular verb in English. It follows the standard verb conjugation rules for regular verbs, such as adding "-ed" to form the past tense.
regular verbs
The word "collecting" is a regular verb form. Regular verbs follow standard rules for verb conjugation, such as adding "-ed" to form the past tense. Irregular verbs do not follow these standard rules.