Lead is present tense. The present participle is leading. Led is the past tense and past participle.
Strike is the present tense, and struck is the past tense and past participle.
Seek is present tense, and seeking is the present participle. Sought is the past tense and past participle.
Pulled is the past tense and past participle of pull. Pulling is the present participle.
The past tense is bit. The present participle is biting. The past participle is bitten.
The present perfect tense with the past participle of "sing" is "have sung."
The past participle is done. The simple past tense is did. The present participle is doing.
The past tense and past participle is equipped; equipping is the present participle.
Strike is the present tense, and struck is the past tense and past participle.
Seek is present tense, and seeking is the present participle. Sought is the past tense and past participle.
The past tense is brought. The past participle is brought. The present participle is bringing.
Pulled is the past tense and past participle of pull. Pulling is the present participle.
The past tense is bit. The present participle is biting. The past participle is bitten.
Wrote is the past tense, written is the past participle, and writing is the present participle.
The present tense is "catch/catches". The past tense and past participle is "caught".
A few of the many irregular verbs in English are:drive (present tense) drove (past tense) driven (past participle)lie (present tense) lay (past tense) lain(past participle)ring (present tense) rang (past tense) rung (past participle)read (present tense) read (past tense) read (past participle)am, is, are (present tense of be), was, were (past tense) been (past participle)
Am is the present tense, first person singular conjugation of be. The past tense is was, and the past participle is been.
Seen is the past participle of the present tense verb see. Saw is the past tense.