The word dig is an irregular verb. The past tense and past participle of the verb dig are dug. Following are the meaning and main forms of the verb dig.
Meaning: create a hole by removing soil
Infinitive: to dig
Present or First Form: dig
Past or Second Form: dug
Past Participle or Third Form: dug
Present Participle or Continuous Form: digging
Meaning: create a hole by removing soil
Infinitive: to dig
Present or First Form: dig
Past or Second Form: dug
Past Participle or Third Form: dug
Present Participle or Continuous Form: digging

Conjugation of Dig Indicative Mood
Dig Present Simple Tense
- I dig
- We dig
- You dig
- He/She/it dig
- They dig
Dig Past Simple Tense
- I dug
- We dug
- You dug
- He/She/It dug
- They dug
Future Simple Tense
- I will dig
- We will dig
- You will dig
- He/She/It will dig
- They will dig
Present Continuous Tense
- I am digging
- He/She/It is digging
- We/You/They are digging
Past Continuous Tense
- I was digging
- He/She/It was digging
- We/You/They were digging
Future Continuous Tense
- I will be digging
- He/She/It will be digging
- We/You/They will be digging
Present Perfect Tense
- I have been dug
- We have been dug
- You have been dug
- He/She/It has been dug
- They have been dug
Past Perfect Tense
- I had been dug
- We had been dug
- You had been dug
- He/She/It had been dug
- They had been dug
Future Perfect Tense
- I will have been dug
- We will have been dug
- You will have been dug
- He/She/It will have been dug
- They will have been dug
Present Perfect Continuous Tense
- I have been digging
- We have been digging
- You have been digging
- He/She/It has been digging
- They have been digging
Past Perfect Continuous Tense
- I had been digging
- We had been digging
- You had been digging
- He/She/It had been digging
- They had been digging
Future Perfect Continuous Tense
- I will have been digging
- We will have been digging
- You will have been digging
- He/She/It will have been digging
- They will have been digging
Conjugation of Dig Subjunctive Mood
Present
- If I dig
- If we dig
- If you dig
- If he (she, it) dig
- If they dig
Past
- If I dug
- If we dug
- If you dug
- If he (she, it) dug
- If they dug
Future
- If I should dig
- If we should dig
- If you should dig
- If he (she, it) should dig
- If they should dig
Conditional
Present
- I should/would dig
- You would dig
- He/She/It would dig
- We should/would dig
- They would dig
Perfect
- I should/would have dug
- You would have dug
- He/She/It would have dug
- We should/would have dug
- They would have dug
Example Sentences
- A cow digs a hole to bury something.
- They have been digging all day.
- They have dug for weeks but have not discovered anything.
- The mouse dug a hole in our lawn.
- We will dig tomorrow.