English verb conjugation
CAN GRUBSTAKE

Regular verb: grubstake - grubstaked - grubstaked

Affirmation

Simple form	V-ing form
I can grubstake you can grubstake she can grubstake we can grubstake you can grubstake they can grubstake	I can be grubstaking you can be grubstaking she can be grubstaking we can be grubstaking you can be grubstaking they can be grubstaking
Perfect	V-ing perfect
I can have grubstaked you can have grubstaked she can have grubstaked we can have grubstaked you can have grubstaked they can have grubstaked	I can have been grubstaking you can have been grubstaking she can have been grubstaking we can have been grubstaking you can have been grubstaking they can have been grubstaking

Negation

Simple form	V-ing form
I can't grubstake you can't grubstake she can't grubstake we can't grubstake you can't grubstake they can't grubstake	I can't be grubstaking you can't be grubstaking she can't be grubstaking we can't be grubstaking you can't be grubstaking they can't be grubstaking
Perfect	V-ing perfect
I can't have grubstaked you can't have grubstaked she can't have grubstaked we can't have grubstaked you can't have grubstaked they can't have grubstaked	I can't have been grubstaking you can't have been grubstaking she can't have been grubstaking we can't have been grubstaking you can't have been grubstaking they can't have been grubstaking

Interrogative form

Simple form	V-ing form
can I grubstake? can you grubstake? can she grubstake? can we grubstake? can you grubstake? can they grubstake?	can I be grubstaking? can you be grubstaking? can she be grubstaking? can we be grubstaking? can you be grubstaking? can they be grubstaking?
Perfect	V-ing perfect
can I have grubstaked? can you have grubstaked? can she have grubstaked? can we have grubstaked? can you have grubstaked? can they have grubstaked?	can I have been grubstaking? can you have been grubstaking? can she have been grubstaking? can we have been grubstaking? can you have been grubstaking? can they have been grubstaking?

Interro-negative form

Simple form	V-ing form
can't I grubstake? can't you grubstake? can't she grubstake? can't we grubstake? can't you grubstake? can't they grubstake?	can't I be grubstaking? can't you be grubstaking? can't she be grubstaking? can't we be grubstaking? can't you be grubstaking? can't they be grubstaking?
Perfect	V-ing perfect
can't I have grubstaked? can't you have grubstaked? can't she have grubstaked? can't we have grubstaked? can't you have grubstaked? can't they have grubstaked?	can't I have been grubstaking? can't you have been grubstaking? can't she have been grubstaking? can't we have been grubstaking? can't you have been grubstaking? can't they have been grubstaking?