I can vein you can vein he can vein we can vein you can vein they can vein
V-ing form
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
I can have veined you can have veined he can have veined we can have veined you can have veined they can have veined
V-ing perfect
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
I can't vein you can't vein he can't vein we can't vein you can't vein they can't vein
V-ing form
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
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
V-ing perfect
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
can I vein? can you vein? can he vein? can we vein? can you vein? can they vein?
V-ing form
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
can I have veined? can you have veined? can he have veined? can we have veined? can you have veined? can they have veined?
V-ing perfect
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
can't I vein? can't you vein? can't he vein? can't we vein? can't you vein? can't they vein?
V-ing form
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
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?
V-ing perfect
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?