| Present Tense | Past Tense | Future Tense |
|---|---|---|
| I challenged | I challenged | I shall/will challenged |
| We challenged | We challenged | We shall/will challenged |
| You challenged | You challenged | You will challenged |
| He challengeds | He challenged | He will challenged |
| She challengeds | She challenged | She will challenged |
| It challengeds | It challenged | It will challenged |
| They challenged | They challenged | They will challenged |
| Present Continuous | Past Continuous | Future Continuous |
|---|---|---|
| I am challenging | I was challenging | I shall/will be challenging |
| We are challenging | We were challenging | We shall/will be challenging |
| You are challenging | You were challenging | You will be challenging |
| He is challenging | He was challenging | He will be challenging |
| She is challenging | She was challenging | She will be challenging |
| It is challenging | It was challenging | It will be challenging |
| They are challenging | They were challenging | They will be challenging |
| Present Perfect | Past Perfect | Future Perfect |
|---|---|---|
| I have challenged | I had challenged | I shall/will have challenged |
| We have challenged | We had challenged | We shall/will have challenged |
| You have challenged | You had challenged | You will have challenged |
| He has challenged | He had challenged | He will have challenged |
| She has challenged | She had challenged | She will have challenged |
| It has challenged | It had challenged | It will have challenged |
| They have challenged | They had challenged | They will have challenged |
| Present Perfect Continuous | Past Perfect Continuous | Future Perfect Continuous |
|---|---|---|
| I have been challenging | I had been challenging | I shall/will have been challenging |
| We have been challenging | We had been challenging | We shall/will have been challenging |
| You have been challenging | You had been challenging | You will have been challenging |
| He has been challenging | He had been challenging | He will have been challenging |
| She has been challenging | She had been challenging | She will have been challenging |
| It has been challenging | It had been challenging | It will have been challenging |
| They have been challenging | They had been challenging | They will have been challenging |