in the PONS Dictionary
I. tread <trod [or Am also treaded], trodden [or Am, Aus trod]> [tred] VB intr
II. tread <trod [or Am also treaded], trodden [or Am, Aus trod]> [tred] VB trans
| I | tread | |
|---|---|---|
| you | tread | |
| he/she/it | treads | |
| we | tread | |
| you | tread | |
| they | tread |
| I | trod / | |
|---|---|---|
| you | trod / | |
| he/she/it | trod / | |
| we | trod / | |
| you | trod / | |
| they | trod / |
| I | have | trodden / trod | |
|---|---|---|---|
| you | have | trodden / trod | |
| he/she/it | has | trodden / trod | |
| we | have | trodden / trod | |
| you | have | trodden / trod | |
| they | have | trodden / trod |
| I | had | trodden / trod | |
|---|---|---|---|
| you | had | trodden / trod | |
| he/she/it | had | trodden / trod | |
| we | had | trodden / trod | |
| you | had | trodden / trod | |
| they | had | trodden / trod |