could amass
Verbo regular: amass - amassed- amassed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could amass
you could amass
he could amass
we could amass
you could amass
they could amass 	I could be amassing
you could be amassing
he could be amassing
we could be amassing
you could be amassing
they could be amassing	I could have amassed
you could have amassed
he could have amassed
we could have amassed
you could have amassed
they could have amassed	I could have been amassing
you could have been amassing
he could have been amassing
we could have been amassing
you could have been amassing
they could have been amassing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't amass
you couldn't amass
he couldn't amass
we couldn't amass
you couldn't amass
they couldn't amass 	I couldn't be amassing
you couldn't be amassing
he couldn't be amassing
we couldn't be amassing
you couldn't be amassing
they couldn't be amassing	I couldn't have amassed
you couldn't have amassed
he couldn't have amassed
we couldn't have amassed
you couldn't have amassed
they couldn't have amassed	I couldn't have been amassing
you couldn't have been amassing
he couldn't have been amassing
we couldn't have been amassing
you couldn't have been amassing
they couldn't have been amassing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I amass?
could you amass?
could he amass?
could we amass?
could you amass?
could they amass? 	could I be amassing?
could you be amassing?
could he be amassing?
could we be amassing?
could you be amassing?
could they be amassing? 	could I have amassed?
could you have amassed?
could he have amassed?
could we have amassed?
could you have amassed?
could they have amassed? 	could I have been amassing?
could you have been amassing?
could he have been amassing?
could we have been amassing?
could you have been amassing?
could they have been amassing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I amass?
couldn't you amass?
couldn't he amass?
couldn't we amass?
couldn't you amass?
couldn't they amass? 	couldn't I be amassing?
couldn't you be amassing?
couldn't he be amassing?
couldn't we be amassing?
couldn't you be amassing?
couldn't they be amassing? 	couldn't I have amassed?
couldn't you have amassed?
couldn't he have amassed?
couldn't we have amassed?
couldn't you have amassed?
couldn't they have amassed? 	couldn't I have been amassing?
couldn't you have been amassing?
couldn't he have been amassing?
couldn't we have been amassing?
couldn't you have been amassing?
couldn't they have been amassing?