English verb conjugation
CAN VEIN

Regular verb: vein - veined - veined

Affirmation

Simple form	V-ing form
I can vein you can vein he can vein we can vein you can vein they can vein	I can be veining you can be veining he can be veining we can be veining you can be veining they can be veining
Perfect	V-ing perfect
I can have veined you can have veined he can have veined we can have veined you can have veined they can have veined	I can have been veining you can have been veining he can have been veining we can have been veining you can have been veining they can have been veining

Negation

Simple form	V-ing form
I can't vein you can't vein he can't vein we can't vein you can't vein they can't vein	I can't be veining you can't be veining he can't be veining we can't be veining you can't be veining they can't be veining
Perfect	V-ing perfect
I can't have veined you can't have veined he can't have veined we can't have veined you can't have veined they can't have veined	I can't have been veining you can't have been veining he can't have been veining we can't have been veining you can't have been veining they can't have been veining

Interrogative form

Simple form	V-ing form
can I vein? can you vein? can he vein? can we vein? can you vein? can they vein?	can I be veining? can you be veining? can he be veining? can we be veining? can you be veining? can they be veining?
Perfect	V-ing perfect
can I have veined? can you have veined? can he have veined? can we have veined? can you have veined? can they have veined?	can I have been veining? can you have been veining? can he have been veining? can we have been veining? can you have been veining? can they have been veining?

Interro-negative form

Simple form	V-ing form
can't I vein? can't you vein? can't he vein? can't we vein? can't you vein? can't they vein?	can't I be veining? can't you be veining? can't he be veining? can't we be veining? can't you be veining? can't they be veining?
Perfect	V-ing perfect
can't I have veined? can't you have veined? can't he have veined? can't we have veined? can't you have veined? can't they have veined?	can't I have been veining? can't you have been veining? can't he have been veining? can't we have been veining? can't you have been veining? can't they have been veining?