could countermine
Verbe régulier : countermine - countermined- countermined

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could countermine
you could countermine
she could countermine
we could countermine
you could countermine
they could countermine 	I could be countermining
you could be countermining
she could be countermining
we could be countermining
you could be countermining
they could be countermining	I could have countermined
you could have countermined
she could have countermined
we could have countermined
you could have countermined
they could have countermined	I could have been countermining
you could have been countermining
she could have been countermining
we could have been countermining
you could have been countermining
they could have been countermining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't countermine
you couldn't countermine
she couldn't countermine
we couldn't countermine
you couldn't countermine
they couldn't countermine 	I couldn't be countermining
you couldn't be countermining
she couldn't be countermining
we couldn't be countermining
you couldn't be countermining
they couldn't be countermining	I couldn't have countermined
you couldn't have countermined
she couldn't have countermined
we couldn't have countermined
you couldn't have countermined
they couldn't have countermined	I couldn't have been countermining
you couldn't have been countermining
she couldn't have been countermining
we couldn't have been countermining
you couldn't have been countermining
they couldn't have been countermining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I countermine?
could you countermine?
could she countermine?
could we countermine?
could you countermine?
could they countermine? 	could I be countermining?
could you be countermining?
could she be countermining?
could we be countermining?
could you be countermining?
could they be countermining? 	could I have countermined?
could you have countermined?
could she have countermined?
could we have countermined?
could you have countermined?
could they have countermined? 	could I have been countermining?
could you have been countermining?
could she have been countermining?
could we have been countermining?
could you have been countermining?
could they have been countermining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I countermine?
couldn't you countermine?
couldn't she countermine?
couldn't we countermine?
couldn't you countermine?
couldn't they countermine? 	couldn't I be countermining?
couldn't you be countermining?
couldn't she be countermining?
couldn't we be countermining?
couldn't you be countermining?
couldn't they be countermining? 	couldn't I have countermined?
couldn't you have countermined?
couldn't she have countermined?
couldn't we have countermined?
couldn't you have countermined?
couldn't they have countermined? 	couldn't I have been countermining?
couldn't you have been countermining?
couldn't she have been countermining?
couldn't we have been countermining?
couldn't you have been countermining?
couldn't they have been countermining?