English verb conjugation
COULD PUTREFY

Regular verb: putrefy - putrefied - putrefied

Affirmation

Simple form	V-ing form
I could putrefy you could putrefy she could putrefy we could putrefy you could putrefy they could putrefy	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	V-ing 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	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	V-ing form
I couldn't putrefy you couldn't putrefy she couldn't putrefy we couldn't putrefy you couldn't putrefy they couldn't putrefy	I couldn't be putrefying you couldn't be putrefying she couldn't be putrefying we couldn't be putrefying you couldn't be putrefying they couldn't be putrefying
Perfect	V-ing perfect
I couldn't have putrefied you couldn't have putrefied she couldn't have putrefied we couldn't have putrefied you couldn't have putrefied they couldn't have putrefied	I couldn't have been putrefying you couldn't have been putrefying she couldn't have been putrefying we couldn't have been putrefying you couldn't have been putrefying they couldn't have been putrefying

Interrogative form

Simple form	V-ing form
could I putrefy? could you putrefy? could she putrefy? could we putrefy? could you putrefy? could they putrefy?	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	V-ing 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?	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	V-ing form
couldn't I putrefy? couldn't you putrefy? couldn't she putrefy? couldn't we putrefy? couldn't you putrefy? couldn't they putrefy?	couldn't I be putrefying? couldn't you be putrefying? couldn't she be putrefying? couldn't we be putrefying? couldn't you be putrefying? couldn't they be putrefying?
Perfect	V-ing perfect
couldn't I have putrefied? couldn't you have putrefied? couldn't she have putrefied? couldn't we have putrefied? couldn't you have putrefied? couldn't they have putrefied?	couldn't I have been putrefying? couldn't you have been putrefying? couldn't she have been putrefying? couldn't we have been putrefying? couldn't you have been putrefying? couldn't they have been putrefying?