I can buckle you can buckle he can buckle we can buckle you can buckle they can buckle
Forma con V-ing
I can be buckling you can be buckling he can be buckling we can be buckling you can be buckling they can be buckling
Perfecto
I can have buckled you can have buckled he can have buckled we can have buckled you can have buckled they can have buckled
Perfecto con V-ing
I can have been buckling you can have been buckling he can have been buckling we can have been buckling you can have been buckling they can have been buckling
Negación
Forma simple
I can't buckle you can't buckle he can't buckle we can't buckle you can't buckle they can't buckle
Forma con V-ing
I can't be buckling you can't be buckling he can't be buckling we can't be buckling you can't be buckling they can't be buckling
Perfecto
I can't have buckled you can't have buckled he can't have buckled we can't have buckled you can't have buckled they can't have buckled
Perfecto con V-ing
I can't have been buckling you can't have been buckling he can't have been buckling we can't have been buckling you can't have been buckling they can't have been buckling
Forma interrogativa
Forma simple
can I buckle? can you buckle? can he buckle? can we buckle? can you buckle? can they buckle?
Forma con V-ing
can I be buckling? can you be buckling? can he be buckling? can we be buckling? can you be buckling? can they be buckling?
Perfecto
can I have buckled? can you have buckled? can he have buckled? can we have buckled? can you have buckled? can they have buckled?
Perfecto con V-ing
can I have been buckling? can you have been buckling? can he have been buckling? can we have been buckling? can you have been buckling? can they have been buckling?
Forma interro-negativa
Forma simple
can't I buckle? can't you buckle? can't he buckle? can't we buckle? can't you buckle? can't they buckle?
Forma con V-ing
can't I be buckling? can't you be buckling? can't he be buckling? can't we be buckling? can't you be buckling? can't they be buckling?
Perfecto
can't I have buckled? can't you have buckled? can't he have buckled? can't we have buckled? can't you have buckled? can't they have buckled?
Perfecto con V-ing
can't I have been buckling? can't you have been buckling? can't he have been buckling? can't we have been buckling? can't you have been buckling? can't they have been buckling?