can topple
Verbo regular: topple - toppled- toppled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can topple
you can topple
he can topple
we can topple
you can topple
they can topple 	I can be toppling
you can be toppling
he can be toppling
we can be toppling
you can be toppling
they can be toppling	I can have toppled
you can have toppled
he can have toppled
we can have toppled
you can have toppled
they can have toppled	I can have been toppling
you can have been toppling
he can have been toppling
we can have been toppling
you can have been toppling
they can have been toppling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot topple
you cannot topple
he cannot topple
we cannot topple
you cannot topple
they cannot topple 	I cannot be toppling
you cannot be toppling
he cannot be toppling
we cannot be toppling
you cannot be toppling
they cannot be toppling	I cannot have toppled
you cannot have toppled
he cannot have toppled
we cannot have toppled
you cannot have toppled
they cannot have toppled	I cannot have been toppling
you cannot have been toppling
he cannot have been toppling
we cannot have been toppling
you cannot have been toppling
they cannot have been toppling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I topple?
can you topple?
can he topple?
can we topple?
can you topple?
can they topple? 	can I be toppling?
can you be toppling?
can he be toppling?
can we be toppling?
can you be toppling?
can they be toppling? 	can I have toppled?
can you have toppled?
can he have toppled?
can we have toppled?
can you have toppled?
can they have toppled? 	can I have been toppling?
can you have been toppling?
can he have been toppling?
can we have been toppling?
can you have been toppling?
can they have been toppling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not topple?
can you not topple?
can he not topple?
can we not topple?
can you not topple?
can they not topple? 	can I not be toppling?
can you not be toppling?
can he not be toppling?
can we not be toppling?
can you not be toppling?
can they not be toppling? 	can I not have toppled?
can you not have toppled?
can he not have toppled?
can we not have toppled?
can you not have toppled?
can they not have toppled? 	can I not have been toppling?
can you not have been toppling?
can he not have been toppling?
can we not have been toppling?
can you not have been toppling?
can they not have been toppling?