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