could thicken thicken
Verbo regular: thicken thicken - thicken thickened- thicken thickened

, este verbo pode não existir, a conjugação é dada como exemplo.

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could thicken thicken
you could thicken thicken
he could thicken thicken
we could thicken thicken
you could thicken thicken
they could thicken thicken 	I could be thicken thickening
you could be thicken thickening
he could be thicken thickening
we could be thicken thickening
you could be thicken thickening
they could be thicken thickening	I could have thicken thickened
you could have thicken thickened
he could have thicken thickened
we could have thicken thickened
you could have thicken thickened
they could have thicken thickened	I could have been thicken thickening
you could have been thicken thickening
he could have been thicken thickening
we could have been thicken thickening
you could have been thicken thickening
they could have been thicken thickening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't thicken thicken
you couldn't thicken thicken
he couldn't thicken thicken
we couldn't thicken thicken
you couldn't thicken thicken
they couldn't thicken thicken 	I couldn't be thicken thickening
you couldn't be thicken thickening
he couldn't be thicken thickening
we couldn't be thicken thickening
you couldn't be thicken thickening
they couldn't be thicken thickening	I couldn't have thicken thickened
you couldn't have thicken thickened
he couldn't have thicken thickened
we couldn't have thicken thickened
you couldn't have thicken thickened
they couldn't have thicken thickened	I couldn't have been thicken thickening
you couldn't have been thicken thickening
he couldn't have been thicken thickening
we couldn't have been thicken thickening
you couldn't have been thicken thickening
they couldn't have been thicken thickening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I thicken thicken?
could you thicken thicken?
could he thicken thicken?
could we thicken thicken?
could you thicken thicken?
could they thicken thicken? 	could I be thicken thickening?
could you be thicken thickening?
could he be thicken thickening?
could we be thicken thickening?
could you be thicken thickening?
could they be thicken thickening? 	could I have thicken thickened?
could you have thicken thickened?
could he have thicken thickened?
could we have thicken thickened?
could you have thicken thickened?
could they have thicken thickened? 	could I have been thicken thickening?
could you have been thicken thickening?
could he have been thicken thickening?
could we have been thicken thickening?
could you have been thicken thickening?
could they have been thicken thickening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I thicken thicken?
couldn't you thicken thicken?
couldn't he thicken thicken?
couldn't we thicken thicken?
couldn't you thicken thicken?
couldn't they thicken thicken? 	couldn't I be thicken thickening?
couldn't you be thicken thickening?
couldn't he be thicken thickening?
couldn't we be thicken thickening?
couldn't you be thicken thickening?
couldn't they be thicken thickening? 	couldn't I have thicken thickened?
couldn't you have thicken thickened?
couldn't he have thicken thickened?
couldn't we have thicken thickened?
couldn't you have thicken thickened?
couldn't they have thicken thickened? 	couldn't I have been thicken thickening?
couldn't you have been thicken thickening?
couldn't he have been thicken thickening?
couldn't we have been thicken thickening?
couldn't you have been thicken thickening?
couldn't they have been thicken thickening?