English verb conjugation
CAN TREMBLE

Regular verb: tremble - trembled - trembled

Affirmation

Simple form	V-ing form
I can tremble you can tremble he can tremble we can tremble you can tremble they can tremble	I can be trembling you can be trembling he can be trembling we can be trembling you can be trembling they can be trembling
Perfect	V-ing perfect
I can have trembled you can have trembled he can have trembled we can have trembled you can have trembled they can have trembled	I can have been trembling you can have been trembling he can have been trembling we can have been trembling you can have been trembling they can have been trembling

Negation

Simple form	V-ing form
I can't tremble you can't tremble he can't tremble we can't tremble you can't tremble they can't tremble	I can't be trembling you can't be trembling he can't be trembling we can't be trembling you can't be trembling they can't be trembling
Perfect	V-ing perfect
I can't have trembled you can't have trembled he can't have trembled we can't have trembled you can't have trembled they can't have trembled	I can't have been trembling you can't have been trembling he can't have been trembling we can't have been trembling you can't have been trembling they can't have been trembling

Interrogative form

Simple form	V-ing form
can I tremble? can you tremble? can he tremble? can we tremble? can you tremble? can they tremble?	can I be trembling? can you be trembling? can he be trembling? can we be trembling? can you be trembling? can they be trembling?
Perfect	V-ing perfect
can I have trembled? can you have trembled? can he have trembled? can we have trembled? can you have trembled? can they have trembled?	can I have been trembling? can you have been trembling? can he have been trembling? can we have been trembling? can you have been trembling? can they have been trembling?

Interro-negative form

Simple form	V-ing form
can't I tremble? can't you tremble? can't he tremble? can't we tremble? can't you tremble? can't they tremble?	can't I be trembling? can't you be trembling? can't he be trembling? can't we be trembling? can't you be trembling? can't they be trembling?
Perfect	V-ing perfect
can't I have trembled? can't you have trembled? can't he have trembled? can't we have trembled? can't you have trembled? can't they have trembled?	can't I have been trembling? can't you have been trembling? can't he have been trembling? can't we have been trembling? can't you have been trembling? can't they have been trembling?