English verb conjugation
CAN SCUBA

Regular verb: scuba - scubaed - scubaed

Affirmation

Simple form	V-ing form
I can scuba you can scuba she can scuba we can scuba you can scuba they can scuba	I can be scubaing you can be scubaing she 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 she 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 she 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 she cannot scuba we cannot scuba you cannot scuba they cannot scuba	I cannot be scubaing you cannot be scubaing she 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 she 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 she 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 she scuba? can we scuba? can you scuba? can they scuba?	can I be scubaing? can you be scubaing? can she 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 she 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 she 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 she 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 she 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 she 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 she not have been scubaing? can we not have been scubaing? can you not have been scubaing? can they not have been scubaing?