can understeer
Regular verb: understeer - understeered- understeered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can understeer
you can understeer
he can understeer
we can understeer
you can understeer
they can understeer 	I can be understeering
you can be understeering
he can be understeering
we can be understeering
you can be understeering
they can be understeering	I can have understeered
you can have understeered
he can have understeered
we can have understeered
you can have understeered
they can have understeered	I can have been understeering
you can have been understeering
he can have been understeering
we can have been understeering
you can have been understeering
they can have been understeering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't understeer
you can't understeer
he can't understeer
we can't understeer
you can't understeer
they can't understeer 	I can't be understeering
you can't be understeering
he can't be understeering
we can't be understeering
you can't be understeering
they can't be understeering	I can't have understeered
you can't have understeered
he can't have understeered
we can't have understeered
you can't have understeered
they can't have understeered	I can't have been understeering
you can't have been understeering
he can't have been understeering
we can't have been understeering
you can't have been understeering
they can't have been understeering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I understeer?
can you understeer?
can he understeer?
can we understeer?
can you understeer?
can they understeer? 	can I be understeering?
can you be understeering?
can he be understeering?
can we be understeering?
can you be understeering?
can they be understeering? 	can I have understeered?
can you have understeered?
can he have understeered?
can we have understeered?
can you have understeered?
can they have understeered? 	can I have been understeering?
can you have been understeering?
can he have been understeering?
can we have been understeering?
can you have been understeering?
can they have been understeering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I understeer?
can't you understeer?
can't he understeer?
can't we understeer?
can't you understeer?
can't they understeer? 	can't I be understeering?
can't you be understeering?
can't he be understeering?
can't we be understeering?
can't you be understeering?
can't they be understeering? 	can't I have understeered?
can't you have understeered?
can't he have understeered?
can't we have understeered?
can't you have understeered?
can't they have understeered? 	can't I have been understeering?
can't you have been understeering?
can't he have been understeering?
can't we have been understeering?
can't you have been understeering?
can't they have been understeering?