English verb conjugation
COULD MURMUR

Regular verb: murmur - murmured - murmured

Affirmation

Simple form	V-ing form
I could murmur you could murmur he could murmur we could murmur you could murmur they could murmur	I could be murmuring you could be murmuring he could be murmuring we could be murmuring you could be murmuring they could be murmuring
Perfect	V-ing perfect
I could have murmured you could have murmured he could have murmured we could have murmured you could have murmured they could have murmured	I could have been murmuring you could have been murmuring he could have been murmuring we could have been murmuring you could have been murmuring they could have been murmuring

Negation

Simple form	V-ing form
I could not murmur you could not murmur he could not murmur we could not murmur you could not murmur they could not murmur	I could not be murmuring you could not be murmuring he could not be murmuring we could not be murmuring you could not be murmuring they could not be murmuring
Perfect	V-ing perfect
I could not have murmured you could not have murmured he could not have murmured we could not have murmured you could not have murmured they could not have murmured	I could not have been murmuring you could not have been murmuring he could not have been murmuring we could not have been murmuring you could not have been murmuring they could not have been murmuring

Interrogative form

Simple form	V-ing form
could I murmur? could you murmur? could he murmur? could we murmur? could you murmur? could they murmur?	could I be murmuring? could you be murmuring? could he be murmuring? could we be murmuring? could you be murmuring? could they be murmuring?
Perfect	V-ing perfect
could I have murmured? could you have murmured? could he have murmured? could we have murmured? could you have murmured? could they have murmured?	could I have been murmuring? could you have been murmuring? could he have been murmuring? could we have been murmuring? could you have been murmuring? could they have been murmuring?

Interro-negative form

Simple form	V-ing form
could I not murmur? could you not murmur? could he not murmur? could we not murmur? could you not murmur? could they not murmur?	could I not be murmuring? could you not be murmuring? could he not be murmuring? could we not be murmuring? could you not be murmuring? could they not be murmuring?
Perfect	V-ing perfect
could I not have murmured? could you not have murmured? could he not have murmured? could we not have murmured? could you not have murmured? could they not have murmured?	could I not have been murmuring? could you not have been murmuring? could he not have been murmuring? could we not have been murmuring? could you not have been murmuring? could they not have been murmuring?