English verb conjugation
CAN STRETCH

Regular verb: stretch - stretched - stretched

Affirmation

Simple form	V-ing form
I can stretch you can stretch he can stretch we can stretch you can stretch they can stretch	I can be stretching you can be stretching he can be stretching we can be stretching you can be stretching they can be stretching
Perfect	V-ing perfect
I can have stretched you can have stretched he can have stretched we can have stretched you can have stretched they can have stretched	I can have been stretching you can have been stretching he can have been stretching we can have been stretching you can have been stretching they can have been stretching

Negation

Simple form	V-ing form
I can't stretch you can't stretch he can't stretch we can't stretch you can't stretch they can't stretch	I can't be stretching you can't be stretching he can't be stretching we can't be stretching you can't be stretching they can't be stretching
Perfect	V-ing perfect
I can't have stretched you can't have stretched he can't have stretched we can't have stretched you can't have stretched they can't have stretched	I can't have been stretching you can't have been stretching he can't have been stretching we can't have been stretching you can't have been stretching they can't have been stretching

Interrogative form

Simple form	V-ing form
can I stretch? can you stretch? can he stretch? can we stretch? can you stretch? can they stretch?	can I be stretching? can you be stretching? can he be stretching? can we be stretching? can you be stretching? can they be stretching?
Perfect	V-ing perfect
can I have stretched? can you have stretched? can he have stretched? can we have stretched? can you have stretched? can they have stretched?	can I have been stretching? can you have been stretching? can he have been stretching? can we have been stretching? can you have been stretching? can they have been stretching?

Interro-negative form

Simple form	V-ing form
can't I stretch? can't you stretch? can't he stretch? can't we stretch? can't you stretch? can't they stretch?	can't I be stretching? can't you be stretching? can't he be stretching? can't we be stretching? can't you be stretching? can't they be stretching?
Perfect	V-ing perfect
can't I have stretched? can't you have stretched? can't he have stretched? can't we have stretched? can't you have stretched? can't they have stretched?	can't I have been stretching? can't you have been stretching? can't he have been stretching? can't we have been stretching? can't you have been stretching? can't they have been stretching?