I can collect you can collect she can collect we can collect you can collect they can collect
Forma com V-ing
I can be collecting you can be collecting she can be collecting we can be collecting you can be collecting they can be collecting
Perfeito
I can have collected you can have collected she can have collected we can have collected you can have collected they can have collected
Perfeito com V-ing
I can have been collecting you can have been collecting she can have been collecting we can have been collecting you can have been collecting they can have been collecting
Negação
Forma simple
I can't collect you can't collect she can't collect we can't collect you can't collect they can't collect
Forma com V-ing
I can't be collecting you can't be collecting she can't be collecting we can't be collecting you can't be collecting they can't be collecting
Perfeito
I can't have collected you can't have collected she can't have collected we can't have collected you can't have collected they can't have collected
Perfeito com V-ing
I can't have been collecting you can't have been collecting she can't have been collecting we can't have been collecting you can't have been collecting they can't have been collecting
Forma interrogativa
Forma simple
can I collect? can you collect? can she collect? can we collect? can you collect? can they collect?
Forma com V-ing
can I be collecting? can you be collecting? can she be collecting? can we be collecting? can you be collecting? can they be collecting?
Perfeito
can I have collected? can you have collected? can she have collected? can we have collected? can you have collected? can they have collected?
Perfeito com V-ing
can I have been collecting? can you have been collecting? can she have been collecting? can we have been collecting? can you have been collecting? can they have been collecting?
Forma interro-Negação
Forma simple
can't I collect? can't you collect? can't she collect? can't we collect? can't you collect? can't they collect?
Forma com V-ing
can't I be collecting? can't you be collecting? can't she be collecting? can't we be collecting? can't you be collecting? can't they be collecting?
Perfeito
can't I have collected? can't you have collected? can't she have collected? can't we have collected? can't you have collected? can't they have collected?
Perfeito com V-ing
can't I have been collecting? can't you have been collecting? can't she have been collecting? can't we have been collecting? can't you have been collecting? can't they have been collecting?