to challenge
Regular verb: challenge - challenged- challenged

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
 don't I challenge?
don't you challenge?
doesn't he challenge?
don't we challenge?
don't you challenge?
don't they challenge? 	amI not challenging?
aren't you challenging?
isn't he challenging?
aren't we challenging?
aren't you challenging?
aren't they challenging? 	didn't I challenge?
didn't you challenge?
didn't he challenge?
didn't we challenge?
didn't you challenge?
didn't they challenge? 	wasn't I challenging?
weren't you challenging?
wasn't he challenging?
weren't we challenging?
weren't you challenging?
weren't they challenging? 	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
haven't I challenged?
haven't you challenged?
hasn't he challenged?
haven't we challenged?
haven't you challenged?
haven't they challenged? 	haven't I been challenging?
haven't you been challenging?
hasn't he been challenging?
haven't we been challenging?
haven't you been challenging?
haven't they been challenging? 	hadn't I challenged?
hadn't you challenged?
hadn't he challenged?
hadn't we challenged?
hadn't you challenged?
hadn't they challenged? 	hadn't I been challenging?
hadn't you been challenging?
hadn't he been challenging?
hadn't we been challenging?
hadn't you been challenging?
hadn't they been challenging? 	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
won't I challenge?
won't you challenge?
won't he challenge?
won't we challenge?
won't you challenge?
won't they challenge? 	won't I be challenging?
won't you be challenging?
won't he be challenging?
won't we be challenging?
won't you be challenging?
won't they be challenging? 	won't I have challenged?
won't you have challenged?
won't he have challenged?
won't we have challenged?
won't you have challenged?
won't they have challenged? 	won't I have been challenging?
won't you have been challenging?
won't he have been challenging?
won't we have been challenging?
won't you have been challenging?
won't they have been challenging? 	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
wouldn't I challenge?
wouldn't you challenge?
wouldn't he challenge?
wouldn't we challenge?
wouldn't you challenge?
wouldn't they challenge? 	wouldn't I be challenging?
wouldn't you be challenging?
wouldn't he be challenging?
wouldn't we be challenging?
wouldn't you be challenging?
wouldn't they be challenging? 	wouldn't I have challenged?
wouldn't you have challenged?
wouldn't he have challenged?
wouldn't we have challenged?
wouldn't you have challenged?
wouldn't they have challenged? 	wouldn't I have been challenging?
wouldn't you have been challenging?
wouldn't he have been challenging?
wouldn't we have been challenging?
wouldn't you have been challenging?
wouldn't they have been challenging? 	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to challenge 	 	-
-
- 	 	

Participle 	
Present 	Past 	 	 	
challenging	challenged