can tree
Verbo regular: tree - treed- treed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can tree
you can tree
he can tree
we can tree
you can tree
they can tree 	I can be treeing
you can be treeing
he can be treeing
we can be treeing
you can be treeing
they can be treeing	I can have treed
you can have treed
he can have treed
we can have treed
you can have treed
they can have treed	I can have been treeing
you can have been treeing
he can have been treeing
we can have been treeing
you can have been treeing
they can have been treeing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't tree
you can't tree
he can't tree
we can't tree
you can't tree
they can't tree 	I can't be treeing
you can't be treeing
he can't be treeing
we can't be treeing
you can't be treeing
they can't be treeing	I can't have treed
you can't have treed
he can't have treed
we can't have treed
you can't have treed
they can't have treed	I can't have been treeing
you can't have been treeing
he can't have been treeing
we can't have been treeing
you can't have been treeing
they can't have been treeing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I tree?
can you tree?
can he tree?
can we tree?
can you tree?
can they tree? 	can I be treeing?
can you be treeing?
can he be treeing?
can we be treeing?
can you be treeing?
can they be treeing? 	can I have treed?
can you have treed?
can he have treed?
can we have treed?
can you have treed?
can they have treed? 	can I have been treeing?
can you have been treeing?
can he have been treeing?
can we have been treeing?
can you have been treeing?
can they have been treeing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I tree?
can't you tree?
can't he tree?
can't we tree?
can't you tree?
can't they tree? 	can't I be treeing?
can't you be treeing?
can't he be treeing?
can't we be treeing?
can't you be treeing?
can't they be treeing? 	can't I have treed?
can't you have treed?
can't he have treed?
can't we have treed?
can't you have treed?
can't they have treed? 	can't I have been treeing?
can't you have been treeing?
can't he have been treeing?
can't we have been treeing?
can't you have been treeing?
can't they have been treeing?