I can buckle you can buckle she can buckle we can buckle you can buckle they can buckle
Forma com V-ing
I can be buckling you can be buckling she can be buckling we can be buckling you can be buckling they can be buckling
Perfeito
I can have buckled you can have buckled she can have buckled we can have buckled you can have buckled they can have buckled
Perfeito com V-ing
I can have been buckling you can have been buckling she can have been buckling we can have been buckling you can have been buckling they can have been buckling
Negação
Forma simple
I can't buckle you can't buckle she can't buckle we can't buckle you can't buckle they can't buckle
Forma com V-ing
I can't be buckling you can't be buckling she can't be buckling we can't be buckling you can't be buckling they can't be buckling
Perfeito
I can't have buckled you can't have buckled she can't have buckled we can't have buckled you can't have buckled they can't have buckled
Perfeito com V-ing
I can't have been buckling you can't have been buckling she 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 she buckle? can we buckle? can you buckle? can they buckle?
Forma com V-ing
can I be buckling? can you be buckling? can she be buckling? can we be buckling? can you be buckling? can they be buckling?
Perfeito
can I have buckled? can you have buckled? can she have buckled? can we have buckled? can you have buckled? can they have buckled?
Perfeito com V-ing
can I have been buckling? can you have been buckling? can she have been buckling? can we have been buckling? can you have been buckling? can they have been buckling?
Forma interro-Negação
Forma simple
can't I buckle? can't you buckle? can't she buckle? can't we buckle? can't you buckle? can't they buckle?
Forma com V-ing
can't I be buckling? can't you be buckling? can't she be buckling? can't we be buckling? can't you be buckling? can't they be buckling?
Perfeito
can't I have buckled? can't you have buckled? can't she have buckled? can't we have buckled? can't you have buckled? can't they have buckled?
Perfeito com V-ing
can't I have been buckling? can't you have been buckling? can't she have been buckling? can't we have been buckling? can't you have been buckling? can't they have been buckling?