could presignal
Verbe régulier : presignal - presignaled- presignaled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could presignal
you could presignal
she could presignal
we could presignal
you could presignal
they could presignal 	I could be presignaling
you could be presignaling
she could be presignaling
we could be presignaling
you could be presignaling
they could be presignaling	I could have presignaled
you could have presignaled
she could have presignaled
we could have presignaled
you could have presignaled
they could have presignaled	I could have been presignaling
you could have been presignaling
she could have been presignaling
we could have been presignaling
you could have been presignaling
they could have been presignaling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't presignal
you couldn't presignal
she couldn't presignal
we couldn't presignal
you couldn't presignal
they couldn't presignal 	I couldn't be presignaling
you couldn't be presignaling
she couldn't be presignaling
we couldn't be presignaling
you couldn't be presignaling
they couldn't be presignaling	I couldn't have presignaled
you couldn't have presignaled
she couldn't have presignaled
we couldn't have presignaled
you couldn't have presignaled
they couldn't have presignaled	I couldn't have been presignaling
you couldn't have been presignaling
she couldn't have been presignaling
we couldn't have been presignaling
you couldn't have been presignaling
they couldn't have been presignaling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I presignal?
could you presignal?
could she presignal?
could we presignal?
could you presignal?
could they presignal? 	could I be presignaling?
could you be presignaling?
could she be presignaling?
could we be presignaling?
could you be presignaling?
could they be presignaling? 	could I have presignaled?
could you have presignaled?
could she have presignaled?
could we have presignaled?
could you have presignaled?
could they have presignaled? 	could I have been presignaling?
could you have been presignaling?
could she have been presignaling?
could we have been presignaling?
could you have been presignaling?
could they have been presignaling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I presignal?
couldn't you presignal?
couldn't she presignal?
couldn't we presignal?
couldn't you presignal?
couldn't they presignal? 	couldn't I be presignaling?
couldn't you be presignaling?
couldn't she be presignaling?
couldn't we be presignaling?
couldn't you be presignaling?
couldn't they be presignaling? 	couldn't I have presignaled?
couldn't you have presignaled?
couldn't she have presignaled?
couldn't we have presignaled?
couldn't you have presignaled?
couldn't they have presignaled? 	couldn't I have been presignaling?
couldn't you have been presignaling?
couldn't she have been presignaling?
couldn't we have been presignaling?
couldn't you have been presignaling?
couldn't they have been presignaling?