Indicative
Present Indefinite
I challenge
you challenge
he/she/it challenges
we challenge
you challenge
they challenge
Present Continuous
I am challenging
you are challenging
he/she/it is challenging
we are challenging
you are challenging
they are challenging
Present Perfect
I have challenged
you have challenged
he/she/it has challenged
we have challenged
you have challenged
they have challenged
Present Perfect Continuous
I have been challenging
you have been challenging
he/she/it has been challenging
we have been challenging
you have been challenging
they have been challenging
Past Indefinite
I challenged
you challenged
he/she/it challenged
we challenged
you challenged
they challenged
Past Continuous
I was challenging
you were challenging
he/she/it was challenging
we were challenging
you were challenging
they were challenging
Past Perfect
I had challenged
you had challenged
he/she/it had challenged
we had challenged
you had challenged
they had challenged
Past Perfect Continuous
I had been challenging
you had been challenging
he/she/it had been challenging
we had been challenging
you had been challenging
they had been challenging
Future Indefinite
I will challenge
you will challenge
he/she/it will challenge
we will challenge
you will challenge
they will challenge
Future Continuous
I will be challenging
you will be challenging
he/she/it will be challenging
we will be challenging
you will be challenging
they will be challenging
Future Perfect
I will have challenged
you will have challenged
he/she/it will have challenged
we will have challenged
you will have challenged
they will have challenged
Future Perfect Continuous
I will have been challenging
you will have been challenging
he/she/it will have been challenging
we will have been challenging
you will have been challenging
they will have been challenging
Conditional
Conditional Present
I would challenge
you would challenge
he/she/it would challenge
we would challenge
you would challenge
they would challenge
Conditional Present Continuous
I would be challenging
you would be challenging
he/she/it would be challenging
we would be challenging
you would be challenging
they would be challenging
Conditional Perfect
I would have challenged
you would have challenged
he/she/it would have challenged
we would have challenged
you would have challenged
they would have challenged
Conditional Perfect Continuous
I would have been challenging
you would have been challenging
he/she/it would have been challenging
we would have been challenging
you would have been challenging
they would have been challenging