I can falter you can falter he can falter we can falter you can falter they can falter
Forma con V-ing
I can be faltering you can be faltering he can be faltering we can be faltering you can be faltering they can be faltering
Perfecto
I can have faltered you can have faltered he can have faltered we can have faltered you can have faltered they can have faltered
Perfecto con V-ing
I can have been faltering you can have been faltering he can have been faltering we can have been faltering you can have been faltering they can have been faltering
Negación
Forma simple
I can't falter you can't falter he can't falter we can't falter you can't falter they can't falter
Forma con V-ing
I can't be faltering you can't be faltering he can't be faltering we can't be faltering you can't be faltering they can't be faltering
Perfecto
I can't have faltered you can't have faltered he can't have faltered we can't have faltered you can't have faltered they can't have faltered
Perfecto con V-ing
I can't have been faltering you can't have been faltering he can't have been faltering we can't have been faltering you can't have been faltering they can't have been faltering
Forma interrogativa
Forma simple
can I falter? can you falter? can he falter? can we falter? can you falter? can they falter?
Forma con V-ing
can I be faltering? can you be faltering? can he be faltering? can we be faltering? can you be faltering? can they be faltering?
Perfecto
can I have faltered? can you have faltered? can he have faltered? can we have faltered? can you have faltered? can they have faltered?
Perfecto con V-ing
can I have been faltering? can you have been faltering? can he have been faltering? can we have been faltering? can you have been faltering? can they have been faltering?
Forma interro-negativa
Forma simple
can't I falter? can't you falter? can't he falter? can't we falter? can't you falter? can't they falter?
Forma con V-ing
can't I be faltering? can't you be faltering? can't he be faltering? can't we be faltering? can't you be faltering? can't they be faltering?
Perfecto
can't I have faltered? can't you have faltered? can't he have faltered? can't we have faltered? can't you have faltered? can't they have faltered?
Perfecto con V-ing
can't I have been faltering? can't you have been faltering? can't he have been faltering? can't we have been faltering? can't you have been faltering? can't they have been faltering?