ought to croak
Regular verb: croak - croaked- croaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to croak
you ought to croak
he ought to croak
we ought to croak
you ought to croak
they ought to croak 	I ought to be croaking
you ought to be croaking
he ought to be croaking
we ought to be croaking
you ought to be croaking
they ought to be croaking	I ought to have croaked
you ought to have croaked
he ought to have croaked
we ought to have croaked
you ought to have croaked
they ought to have croaked	I ought to have been croaking
you ought to have been croaking
he ought to have been croaking
we ought to have been croaking
you ought to have been croaking
they ought to have been croaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to croak
you ought not to croak
he ought not to croak
we ought not to croak
you ought not to croak
they ought not to croak 	I ought not to croaking
you ought not to croaking
he ought not to croaking
we ought not to croaking
you ought not to croaking
they ought not to croaking	I ought not to have croaked
you ought not to have croaked
he ought not to have croaked
we ought not to have croaked
you ought not to have croaked
they ought not to have croaked	I ought not to have been croaking
you ought not to have been croaking
he ought not to have been croaking
we ought not to have been croaking
you ought not to have been croaking
they ought not to have been croaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I croak?
ought to you croak?
ought to he croak?
ought to we croak?
ought to you croak?
ought to they croak? 	ought to I be croaking?
ought to you be croaking?
ought to he be croaking?
ought to we be croaking?
ought to you be croaking?
ought to they be croaking? 	ought to I have croaked?
ought to you have croaked?
ought to he have croaked?
ought to we have croaked?
ought to you have croaked?
ought to they have croaked? 	ought to I have been croaking?
ought to you have been croaking?
ought to he have been croaking?
ought to we have been croaking?
ought to you have been croaking?
ought to they have been croaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to croak?
ought you not to croak?
ought he not to croak?
ought we not to croak?
ought you not to croak?
ought they not to croak? 	ought I not to be croaking?
ought you not to be croaking?
ought he not to be croaking?
ought we not to be croaking?
ought you not to be croaking?
ought they not to be croaking? 	ought I not to have croaked?
ought you not to have croaked?
ought he not to have croaked?
ought we not to have croaked?
ought you not to have croaked?
ought they not to have croaked? 	ought I not to have been croaking?
ought you not to have been croaking?
ought he not to have been croaking?
ought we not to have been croaking?
ought you not to have been croaking?
ought they not to have been croaking?