English verb conjugation
CAN SERVICE

Regular verb: service - serviced - serviced

Affirmation

Simple form	V-ing form
I can service you can service he can service we can service you can service they can service	I can be servicing you can be servicing he can be servicing we can be servicing you can be servicing they can be servicing
Perfect	V-ing perfect
I can have serviced you can have serviced he can have serviced we can have serviced you can have serviced they can have serviced	I can have been servicing you can have been servicing he can have been servicing we can have been servicing you can have been servicing they can have been servicing

Negation

Simple form	V-ing form
I can't service you can't service he can't service we can't service you can't service they can't service	I can't be servicing you can't be servicing he can't be servicing we can't be servicing you can't be servicing they can't be servicing
Perfect	V-ing perfect
I can't have serviced you can't have serviced he can't have serviced we can't have serviced you can't have serviced they can't have serviced	I can't have been servicing you can't have been servicing he can't have been servicing we can't have been servicing you can't have been servicing they can't have been servicing

Interrogative form

Simple form	V-ing form
can I service? can you service? can he service? can we service? can you service? can they service?	can I be servicing? can you be servicing? can he be servicing? can we be servicing? can you be servicing? can they be servicing?
Perfect	V-ing perfect
can I have serviced? can you have serviced? can he have serviced? can we have serviced? can you have serviced? can they have serviced?	can I have been servicing? can you have been servicing? can he have been servicing? can we have been servicing? can you have been servicing? can they have been servicing?

Interro-negative form

Simple form	V-ing form
can't I service? can't you service? can't he service? can't we service? can't you service? can't they service?	can't I be servicing? can't you be servicing? can't he be servicing? can't we be servicing? can't you be servicing? can't they be servicing?
Perfect	V-ing perfect
can't I have serviced? can't you have serviced? can't he have serviced? can't we have serviced? can't you have serviced? can't they have serviced?	can't I have been servicing? can't you have been servicing? can't he have been servicing? can't we have been servicing? can't you have been servicing? can't they have been servicing?