I could liquefy you could liquefy he could liquefy we could liquefy you could liquefy they could liquefy
Forma con V-ing
I could be liquefying you could be liquefying he could be liquefying we could be liquefying you could be liquefying they could be liquefying
Perfecto
I could have liquefied you could have liquefied he could have liquefied we could have liquefied you could have liquefied they could have liquefied
Perfecto con V-ing
I could have been liquefying you could have been liquefying he could have been liquefying we could have been liquefying you could have been liquefying they could have been liquefying
Negación
Forma simple
I couldn't liquefy you couldn't liquefy he couldn't liquefy we couldn't liquefy you couldn't liquefy they couldn't liquefy
Forma con V-ing
I couldn't be liquefying you couldn't be liquefying he couldn't be liquefying we couldn't be liquefying you couldn't be liquefying they couldn't be liquefying
Perfecto
I couldn't have liquefied you couldn't have liquefied he couldn't have liquefied we couldn't have liquefied you couldn't have liquefied they couldn't have liquefied
Perfecto con V-ing
I couldn't have been liquefying you couldn't have been liquefying he couldn't have been liquefying we couldn't have been liquefying you couldn't have been liquefying they couldn't have been liquefying
Forma interrogativa
Forma simple
could I liquefy? could you liquefy? could he liquefy? could we liquefy? could you liquefy? could they liquefy?
Forma con V-ing
could I be liquefying? could you be liquefying? could he be liquefying? could we be liquefying? could you be liquefying? could they be liquefying?
Perfecto
could I have liquefied? could you have liquefied? could he have liquefied? could we have liquefied? could you have liquefied? could they have liquefied?
Perfecto con V-ing
could I have been liquefying? could you have been liquefying? could he have been liquefying? could we have been liquefying? could you have been liquefying? could they have been liquefying?
Forma interro-negativa
Forma simple
couldn't I liquefy? couldn't you liquefy? couldn't he liquefy? couldn't we liquefy? couldn't you liquefy? couldn't they liquefy?
Forma con V-ing
couldn't I be liquefying? couldn't you be liquefying? couldn't he be liquefying? couldn't we be liquefying? couldn't you be liquefying? couldn't they be liquefying?
Perfecto
couldn't I have liquefied? couldn't you have liquefied? couldn't he have liquefied? couldn't we have liquefied? couldn't you have liquefied? couldn't they have liquefied?
Perfecto con V-ing
couldn't I have been liquefying? couldn't you have been liquefying? couldn't he have been liquefying? couldn't we have been liquefying? couldn't you have been liquefying? couldn't they have been liquefying?