could cogitate
Verbo regular: cogitate - cogitated- cogitated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could cogitate
you could cogitate
he could cogitate
we could cogitate
you could cogitate
they could cogitate 	I could be cogitating
you could be cogitating
he could be cogitating
we could be cogitating
you could be cogitating
they could be cogitating	I could have cogitated
you could have cogitated
he could have cogitated
we could have cogitated
you could have cogitated
they could have cogitated	I could have been cogitating
you could have been cogitating
he could have been cogitating
we could have been cogitating
you could have been cogitating
they could have been cogitating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't cogitate
you couldn't cogitate
he couldn't cogitate
we couldn't cogitate
you couldn't cogitate
they couldn't cogitate 	I couldn't be cogitating
you couldn't be cogitating
he couldn't be cogitating
we couldn't be cogitating
you couldn't be cogitating
they couldn't be cogitating	I couldn't have cogitated
you couldn't have cogitated
he couldn't have cogitated
we couldn't have cogitated
you couldn't have cogitated
they couldn't have cogitated	I couldn't have been cogitating
you couldn't have been cogitating
he couldn't have been cogitating
we couldn't have been cogitating
you couldn't have been cogitating
they couldn't have been cogitating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I cogitate?
could you cogitate?
could he cogitate?
could we cogitate?
could you cogitate?
could they cogitate? 	could I be cogitating?
could you be cogitating?
could he be cogitating?
could we be cogitating?
could you be cogitating?
could they be cogitating? 	could I have cogitated?
could you have cogitated?
could he have cogitated?
could we have cogitated?
could you have cogitated?
could they have cogitated? 	could I have been cogitating?
could you have been cogitating?
could he have been cogitating?
could we have been cogitating?
could you have been cogitating?
could they have been cogitating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I cogitate?
couldn't you cogitate?
couldn't he cogitate?
couldn't we cogitate?
couldn't you cogitate?
couldn't they cogitate? 	couldn't I be cogitating?
couldn't you be cogitating?
couldn't he be cogitating?
couldn't we be cogitating?
couldn't you be cogitating?
couldn't they be cogitating? 	couldn't I have cogitated?
couldn't you have cogitated?
couldn't he have cogitated?
couldn't we have cogitated?
couldn't you have cogitated?
couldn't they have cogitated? 	couldn't I have been cogitating?
couldn't you have been cogitating?
couldn't he have been cogitating?
couldn't we have been cogitating?
couldn't you have been cogitating?
couldn't they have been cogitating?