could hook
Regular verb: hook - hooked- hooked

Affirmation 	
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I could hook
you could hook
she could hook
we could hook
you could hook
they could hook 	I could be hooking
you could be hooking
she could be hooking
we could be hooking
you could be hooking
they could be hooking	I could have hooked
you could have hooked
she could have hooked
we could have hooked
you could have hooked
they could have hooked	I could have been hooking
you could have been hooking
she could have been hooking
we could have been hooking
you could have been hooking
they could have been hooking	

Negation 	
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I couldn't hook
you couldn't hook
she couldn't hook
we couldn't hook
you couldn't hook
they couldn't hook 	I couldn't be hooking
you couldn't be hooking
she couldn't be hooking
we couldn't be hooking
you couldn't be hooking
they couldn't be hooking	I couldn't have hooked
you couldn't have hooked
she couldn't have hooked
we couldn't have hooked
you couldn't have hooked
they couldn't have hooked	I couldn't have been hooking
you couldn't have been hooking
she couldn't have been hooking
we couldn't have been hooking
you couldn't have been hooking
they couldn't have been hooking	

Interrogative form 	
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could I hook?
could you hook?
could she hook?
could we hook?
could you hook?
could they hook? 	could I be hooking?
could you be hooking?
could she be hooking?
could we be hooking?
could you be hooking?
could they be hooking? 	could I have hooked?
could you have hooked?
could she have hooked?
could we have hooked?
could you have hooked?
could they have hooked? 	could I have been hooking?
could you have been hooking?
could she have been hooking?
could we have been hooking?
could you have been hooking?
could they have been hooking? 	

Interro-negative form 	
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couldn't I hook?
couldn't you hook?
couldn't she hook?
couldn't we hook?
couldn't you hook?
couldn't they hook? 	couldn't I be hooking?
couldn't you be hooking?
couldn't she be hooking?
couldn't we be hooking?
couldn't you be hooking?
couldn't they be hooking? 	couldn't I have hooked?
couldn't you have hooked?
couldn't she have hooked?
couldn't we have hooked?
couldn't you have hooked?
couldn't they have hooked? 	couldn't I have been hooking?
couldn't you have been hooking?
couldn't she have been hooking?
couldn't we have been hooking?
couldn't you have been hooking?
couldn't they have been hooking?