English verb conjugation
CAN DRAB

Regular verb: drab - drabed - drabed

Affirmation

Simple form	V-ing form
I can drab you can drab he can drab we can drab you can drab they can drab	I can be drabing you can be drabing he can be drabing we can be drabing you can be drabing they can be drabing
Perfect	V-ing perfect
I can have drabed you can have drabed he can have drabed we can have drabed you can have drabed they can have drabed	I can have been drabing you can have been drabing he can have been drabing we can have been drabing you can have been drabing they can have been drabing

Negation

Simple form	V-ing form
I can't drab you can't drab he can't drab we can't drab you can't drab they can't drab	I can't be drabing you can't be drabing he can't be drabing we can't be drabing you can't be drabing they can't be drabing
Perfect	V-ing perfect
I can't have drabed you can't have drabed he can't have drabed we can't have drabed you can't have drabed they can't have drabed	I can't have been drabing you can't have been drabing he can't have been drabing we can't have been drabing you can't have been drabing they can't have been drabing

Interrogative form

Simple form	V-ing form
can I drab? can you drab? can he drab? can we drab? can you drab? can they drab?	can I be drabing? can you be drabing? can he be drabing? can we be drabing? can you be drabing? can they be drabing?
Perfect	V-ing perfect
can I have drabed? can you have drabed? can he have drabed? can we have drabed? can you have drabed? can they have drabed?	can I have been drabing? can you have been drabing? can he have been drabing? can we have been drabing? can you have been drabing? can they have been drabing?

Interro-negative form

Simple form	V-ing form
can't I drab? can't you drab? can't he drab? can't we drab? can't you drab? can't they drab?	can't I be drabing? can't you be drabing? can't he be drabing? can't we be drabing? can't you be drabing? can't they be drabing?
Perfect	V-ing perfect
can't I have drabed? can't you have drabed? can't he have drabed? can't we have drabed? can't you have drabed? can't they have drabed?	can't I have been drabing? can't you have been drabing? can't he have been drabing? can't we have been drabing? can't you have been drabing? can't they have been drabing?