Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could grub. nuzzle you could grub. nuzzle he could grub. nuzzle we could grub. nuzzle you could grub. nuzzle they could grub. nuzzle
V-ing form
I could be grub. nuzzling you could be grub. nuzzling he could be grub. nuzzling we could be grub. nuzzling you could be grub. nuzzling they could be grub. nuzzling
Perfect
I could have grub. nuzzled you could have grub. nuzzled he could have grub. nuzzled we could have grub. nuzzled you could have grub. nuzzled they could have grub. nuzzled
V-ing perfect
I could have been grub. nuzzling you could have been grub. nuzzling he could have been grub. nuzzling we could have been grub. nuzzling you could have been grub. nuzzling they could have been grub. nuzzling
Negation
Simple form
I could not grub. nuzzle you could not grub. nuzzle he could not grub. nuzzle we could not grub. nuzzle you could not grub. nuzzle they could not grub. nuzzle
V-ing form
I could not be grub. nuzzling you could not be grub. nuzzling he could not be grub. nuzzling we could not be grub. nuzzling you could not be grub. nuzzling they could not be grub. nuzzling
Perfect
I could not have grub. nuzzled you could not have grub. nuzzled he could not have grub. nuzzled we could not have grub. nuzzled you could not have grub. nuzzled they could not have grub. nuzzled
V-ing perfect
I could not have been grub. nuzzling you could not have been grub. nuzzling he could not have been grub. nuzzling we could not have been grub. nuzzling you could not have been grub. nuzzling they could not have been grub. nuzzling
Interrogative form
Simple form
could I grub. nuzzle? could you grub. nuzzle? could he grub. nuzzle? could we grub. nuzzle? could you grub. nuzzle? could they grub. nuzzle?
V-ing form
could I be grub. nuzzling? could you be grub. nuzzling? could he be grub. nuzzling? could we be grub. nuzzling? could you be grub. nuzzling? could they be grub. nuzzling?
Perfect
could I have grub. nuzzled? could you have grub. nuzzled? could he have grub. nuzzled? could we have grub. nuzzled? could you have grub. nuzzled? could they have grub. nuzzled?
V-ing perfect
could I have been grub. nuzzling? could you have been grub. nuzzling? could he have been grub. nuzzling? could we have been grub. nuzzling? could you have been grub. nuzzling? could they have been grub. nuzzling?
Interro-negative form
Simple form
could I not grub. nuzzle? could you not grub. nuzzle? could he not grub. nuzzle? could we not grub. nuzzle? could you not grub. nuzzle? could they not grub. nuzzle?
V-ing form
could I not be grub. nuzzling? could you not be grub. nuzzling? could he not be grub. nuzzling? could we not be grub. nuzzling? could you not be grub. nuzzling? could they not be grub. nuzzling?
Perfect
could I not have grub. nuzzled? could you not have grub. nuzzled? could he not have grub. nuzzled? could we not have grub. nuzzled? could you not have grub. nuzzled? could they not have grub. nuzzled?
V-ing perfect
could I not have been grub. nuzzling? could you not have been grub. nuzzling? could he not have been grub. nuzzling? could we not have been grub. nuzzling? could you not have been grub. nuzzling? could they not have been grub. nuzzling?