I could putrefy you could putrefy she could putrefy we could putrefy you could putrefy they could putrefy
V-ing form
I could be putrefying you could be putrefying she could be putrefying we could be putrefying you could be putrefying they could be putrefying
Perfect
I could have putrefied you could have putrefied she could have putrefied we could have putrefied you could have putrefied they could have putrefied
V-ing perfect
I could have been putrefying you could have been putrefying she could have been putrefying we could have been putrefying you could have been putrefying they could have been putrefying
Negation
Simple form
I could not putrefy you could not putrefy she could not putrefy we could not putrefy you could not putrefy they could not putrefy
V-ing form
I could not be putrefying you could not be putrefying she could not be putrefying we could not be putrefying you could not be putrefying they could not be putrefying
Perfect
I could not have putrefied you could not have putrefied she could not have putrefied we could not have putrefied you could not have putrefied they could not have putrefied
V-ing perfect
I could not have been putrefying you could not have been putrefying she could not have been putrefying we could not have been putrefying you could not have been putrefying they could not have been putrefying
Interrogative form
Simple form
could I putrefy? could you putrefy? could she putrefy? could we putrefy? could you putrefy? could they putrefy?
V-ing form
could I be putrefying? could you be putrefying? could she be putrefying? could we be putrefying? could you be putrefying? could they be putrefying?
Perfect
could I have putrefied? could you have putrefied? could she have putrefied? could we have putrefied? could you have putrefied? could they have putrefied?
V-ing perfect
could I have been putrefying? could you have been putrefying? could she have been putrefying? could we have been putrefying? could you have been putrefying? could they have been putrefying?
Interro-negative form
Simple form
could I not putrefy? could you not putrefy? could she not putrefy? could we not putrefy? could you not putrefy? could they not putrefy?
V-ing form
could I not be putrefying? could you not be putrefying? could she not be putrefying? could we not be putrefying? could you not be putrefying? could they not be putrefying?
Perfect
could I not have putrefied? could you not have putrefied? could she not have putrefied? could we not have putrefied? could you not have putrefied? could they not have putrefied?
V-ing perfect
could I not have been putrefying? could you not have been putrefying? could she not have been putrefying? could we not have been putrefying? could you not have been putrefying? could they not have been putrefying?