English verb conjugation
CAN SCUBA

Regular verb: scuba - scubaed - scubaed

Affirmation

Simple form	V-ing form
I can scuba you can scuba he can scuba we can scuba you can scuba they can scuba	I can be scubaing you can be scubaing he can be scubaing we can be scubaing you can be scubaing they can be scubaing
Perfect	V-ing perfect
I can have scubaed you can have scubaed he can have scubaed we can have scubaed you can have scubaed they can have scubaed	I can have been scubaing you can have been scubaing he can have been scubaing we can have been scubaing you can have been scubaing they can have been scubaing

Negation

Simple form	V-ing form
I cannot scuba you cannot scuba he cannot scuba we cannot scuba you cannot scuba they cannot scuba	I cannot be scubaing you cannot be scubaing he cannot be scubaing we cannot be scubaing you cannot be scubaing they cannot be scubaing
Perfect	V-ing perfect
I cannot have scubaed you cannot have scubaed he cannot have scubaed we cannot have scubaed you cannot have scubaed they cannot have scubaed	I cannot have been scubaing you cannot have been scubaing he cannot have been scubaing we cannot have been scubaing you cannot have been scubaing they cannot have been scubaing

Interrogative form

Simple form	V-ing form
can I scuba? can you scuba? can he scuba? can we scuba? can you scuba? can they scuba?	can I be scubaing? can you be scubaing? can he be scubaing? can we be scubaing? can you be scubaing? can they be scubaing?
Perfect	V-ing perfect
can I have scubaed? can you have scubaed? can he have scubaed? can we have scubaed? can you have scubaed? can they have scubaed?	can I have been scubaing? can you have been scubaing? can he have been scubaing? can we have been scubaing? can you have been scubaing? can they have been scubaing?

Interro-negative form

Simple form	V-ing form
can I not scuba? can you not scuba? can he not scuba? can we not scuba? can you not scuba? can they not scuba?	can I not be scubaing? can you not be scubaing? can he not be scubaing? can we not be scubaing? can you not be scubaing? can they not be scubaing?
Perfect	V-ing perfect
can I not have scubaed? can you not have scubaed? can he not have scubaed? can we not have scubaed? can you not have scubaed? can they not have scubaed?	can I not have been scubaing? can you not have been scubaing? can he not have been scubaing? can we not have been scubaing? can you not have been scubaing? can they not have been scubaing?