English verb conjugation
COULD GROUCH

Regular verb: grouch - grouched - grouched

Affirmation

Simple form	V-ing form
I could grouch you could grouch he could grouch we could grouch you could grouch they could grouch	I could be grouching you could be grouching he could be grouching we could be grouching you could be grouching they could be grouching
Perfect	V-ing perfect
I could have grouched you could have grouched he could have grouched we could have grouched you could have grouched they could have grouched	I could have been grouching you could have been grouching he could have been grouching we could have been grouching you could have been grouching they could have been grouching

Negation

Simple form	V-ing form
I could not grouch you could not grouch he could not grouch we could not grouch you could not grouch they could not grouch	I could not be grouching you could not be grouching he could not be grouching we could not be grouching you could not be grouching they could not be grouching
Perfect	V-ing perfect
I could not have grouched you could not have grouched he could not have grouched we could not have grouched you could not have grouched they could not have grouched	I could not have been grouching you could not have been grouching he could not have been grouching we could not have been grouching you could not have been grouching they could not have been grouching

Interrogative form

Simple form	V-ing form
could I grouch? could you grouch? could he grouch? could we grouch? could you grouch? could they grouch?	could I be grouching? could you be grouching? could he be grouching? could we be grouching? could you be grouching? could they be grouching?
Perfect	V-ing perfect
could I have grouched? could you have grouched? could he have grouched? could we have grouched? could you have grouched? could they have grouched?	could I have been grouching? could you have been grouching? could he have been grouching? could we have been grouching? could you have been grouching? could they have been grouching?

Interro-negative form

Simple form	V-ing form
could I not grouch? could you not grouch? could he not grouch? could we not grouch? could you not grouch? could they not grouch?	could I not be grouching? could you not be grouching? could he not be grouching? could we not be grouching? could you not be grouching? could they not be grouching?
Perfect	V-ing perfect
could I not have grouched? could you not have grouched? could he not have grouched? could we not have grouched? could you not have grouched? could they not have grouched?	could I not have been grouching? could you not have been grouching? could he not have been grouching? could we not have been grouching? could you not have been grouching? could they not have been grouching?