Conjugación del verbo inglés
COULD PREFORMULATE

Verbo regular: preformulate - preformulated - preformulated

Afirmación

Forma simple	Forma con V-ing
I could preformulate you could preformulate he could preformulate we could preformulate you could preformulate they could preformulate	I could be preformulating you could be preformulating he could be preformulating we could be preformulating you could be preformulating they could be preformulating
Perfecto	Perfecto con V-ing
I could have preformulated you could have preformulated he could have preformulated we could have preformulated you could have preformulated they could have preformulated	I could have been preformulating you could have been preformulating he could have been preformulating we could have been preformulating you could have been preformulating they could have been preformulating

Negación

Forma simple	Forma con V-ing
I couldn't preformulate you couldn't preformulate he couldn't preformulate we couldn't preformulate you couldn't preformulate they couldn't preformulate	I couldn't be preformulating you couldn't be preformulating he couldn't be preformulating we couldn't be preformulating you couldn't be preformulating they couldn't be preformulating
Perfecto	Perfecto con V-ing
I couldn't have preformulated you couldn't have preformulated he couldn't have preformulated we couldn't have preformulated you couldn't have preformulated they couldn't have preformulated	I couldn't have been preformulating you couldn't have been preformulating he couldn't have been preformulating we couldn't have been preformulating you couldn't have been preformulating they couldn't have been preformulating

Forma interrogativa

Forma simple	Forma con V-ing
could I preformulate? could you preformulate? could he preformulate? could we preformulate? could you preformulate? could they preformulate?	could I be preformulating? could you be preformulating? could he be preformulating? could we be preformulating? could you be preformulating? could they be preformulating?
Perfecto	Perfecto con V-ing
could I have preformulated? could you have preformulated? could he have preformulated? could we have preformulated? could you have preformulated? could they have preformulated?	could I have been preformulating? could you have been preformulating? could he have been preformulating? could we have been preformulating? could you have been preformulating? could they have been preformulating?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I preformulate? couldn't you preformulate? couldn't he preformulate? couldn't we preformulate? couldn't you preformulate? couldn't they preformulate?	couldn't I be preformulating? couldn't you be preformulating? couldn't he be preformulating? couldn't we be preformulating? couldn't you be preformulating? couldn't they be preformulating?
Perfecto	Perfecto con V-ing
couldn't I have preformulated? couldn't you have preformulated? couldn't he have preformulated? couldn't we have preformulated? couldn't you have preformulated? couldn't they have preformulated?	couldn't I have been preformulating? couldn't you have been preformulating? couldn't he have been preformulating? couldn't we have been preformulating? couldn't you have been preformulating? couldn't they have been preformulating?