infinitive: run
past: ran
past participle: run
Past Perfect is formed like this: had + past participle
Past Perfect : had run
The past perfect tense is had moved.
The past perfect tense is had come.
"Had flowed" is the past perfect tense of flow.
"Had flowed" is the past perfect tense of flow.
"Had moved" is the past perfect form of "move".
The past perfect tense is had run.
past: ran past perfect: had run past progressive: was/were running past perfect progressive: had been running
The past tense is 'ran'. The past participle is 'run', so the past perfect (pluperfect) tense is 'had run'. 'I ran three miles yesterday.' 'I had run twenty miles over the previous week.' 'I ran that training course last year.' 'The course had been run many times before.' (this is passive past perfect). Jack had run the course many times. (active past perfect) NEVER 'have ran' or 'had ran'. Those constructions do not exist in English.
Have run is the correct present perfect tense. Perfect tenses are created with past participles, and the past participle of run is run.
Existed is the past tense. The past perfect tense is had existed.
The past perfect tense of hope is had hoped.
The past tense is bled, and the past perfect tense is had bled.
The past tense of sit is sat; the past perfect tense is had sat.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
The past perfect tense of 'get' is 'had gotten'
"Had been" is the past perfect tense of be.
The past perfect tense of do is had done.