Attention, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.
Affirmation
Forme simple
I could think back you could think back he could think back we could think back you could think back they could think back
Forme en V-ing
I could be think backing you could be think backing he could be think backing we could be think backing you could be think backing they could be think backing
Perfect
I could have think backed you could have think backed he could have think backed we could have think backed you could have think backed they could have think backed
Perfect en V-ing
I could have been think backing you could have been think backing he could have been think backing we could have been think backing you could have been think backing they could have been think backing
Négation
Forme simple
I couldn't think back you couldn't think back he couldn't think back we couldn't think back you couldn't think back they couldn't think back
Forme en V-ing
I couldn't be think backing you couldn't be think backing he couldn't be think backing we couldn't be think backing you couldn't be think backing they couldn't be think backing
Perfect
I couldn't have think backed you couldn't have think backed he couldn't have think backed we couldn't have think backed you couldn't have think backed they couldn't have think backed
Perfect en V-ing
I couldn't have been think backing you couldn't have been think backing he couldn't have been think backing we couldn't have been think backing you couldn't have been think backing they couldn't have been think backing
Forme interrogative
Forme simple
could I think back? could you think back? could he think back? could we think back? could you think back? could they think back?
Forme en V-ing
could I be think backing? could you be think backing? could he be think backing? could we be think backing? could you be think backing? could they be think backing?
Perfect
could I have think backed? could you have think backed? could he have think backed? could we have think backed? could you have think backed? could they have think backed?
Perfect en V-ing
could I have been think backing? could you have been think backing? could he have been think backing? could we have been think backing? could you have been think backing? could they have been think backing?
Forme interro-négative
Forme simple
couldn't I think back? couldn't you think back? couldn't he think back? couldn't we think back? couldn't you think back? couldn't they think back?
Forme en V-ing
couldn't I be think backing? couldn't you be think backing? couldn't he be think backing? couldn't we be think backing? couldn't you be think backing? couldn't they be think backing?
Perfect
couldn't I have think backed? couldn't you have think backed? couldn't he have think backed? couldn't we have think backed? couldn't you have think backed? couldn't they have think backed?
Perfect en V-ing
couldn't I have been think backing? couldn't you have been think backing? couldn't he have been think backing? couldn't we have been think backing? couldn't you have been think backing? couldn't they have been think backing?