The past tense of chromatograph is chromatographed
| Infinitive | to chromatograph |
| Present Tense | chromatograph / chromatographs |
| Past Tense | chromatographed |
| Present Participle | chromatographing |
| Past Participle | chromatographed |
| Singular | Plural |
|---|---|
| I chromatograph | We chromatograph |
| You chromatograph | You chromatograph |
| He/She/It chromatographs | They chromatograph |
| Singular | Plural |
|---|---|
| I am chromatographing | We are chromatographing |
| You are chromatographing | You are chromatographing |
| He/She/It is chromatographing | They are chromatographing |
| Singular | Plural |
|---|---|
| I have chromatographed | We have chromatographed |
| You have chromatographed | You have chromatographed |
| He/She/It has chromatographed | They have chromatographed |
| Singular | Plural |
|---|---|
| I have been chromatographing | We have been chromatographing |
| You have been chromatographing | You have been chromatographing |
| He/She/It has been chromatographing | They have been chromatographing |
| Singular | Plural |
|---|---|
| I chromatographed | We chromatographed |
| You chromatographed | You chromatographed |
| He/She/It chromatographed | They chromatographed |
| Singular | Plural |
|---|---|
| I was chromatographing | We were chromatographing |
| You were chromatographing | You were chromatographing |
| He/She/It was chromatographing | They were chromatographing |
| Singular | Plural |
|---|---|
| I had chromatographed | We had chromatographed |
| You had chromatographed | You had chromatographed |
| He/She/It had chromatographed | They had chromatographed |
| Singular | Plural |
|---|---|
| I had been chromatographing | We had been chromatographing |
| You had been chromatographing | You had been chromatographing |
| He/She/It had been chromatographing | They had been chromatographing |
| Singular | Plural |
|---|---|
| I will chromatograph | We will chromatograph |
| You will chromatograph | You will chromatograph |
| He/She/It will chromatograph | They will chromatograph |
| Singular | Plural |
|---|---|
| I will be chromatographing | We will be chromatographing |
| You will be chromatographing | You will be chromatographing |
| He/She/It will be chromatographing | They will be chromatographing |
| Singular | Plural |
|---|---|
| I will have chromatographed | We will have chromatographed |
| You will have chromatographed | You will have chromatographed |
| He/She/It will have chromatographed | They will have chromatographed |
| Singular | Plural |
|---|---|
| I will have been chromatographing | We will have been chromatographing |
| You will have been chromatographing | You will have been chromatographing |
| He/She/It will have been chromatographing | They will have been chromatographing |
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