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