I can ingest you can ingest he can ingest we can ingest you can ingest they can ingest
V-ing form
I can be ingesting you can be ingesting he can be ingesting we can be ingesting you can be ingesting they can be ingesting
Perfect
I can have ingested you can have ingested he can have ingested we can have ingested you can have ingested they can have ingested
V-ing perfect
I can have been ingesting you can have been ingesting he can have been ingesting we can have been ingesting you can have been ingesting they can have been ingesting
Negation
Simple form
I can't ingest you can't ingest he can't ingest we can't ingest you can't ingest they can't ingest
V-ing form
I can't be ingesting you can't be ingesting he can't be ingesting we can't be ingesting you can't be ingesting they can't be ingesting
Perfect
I can't have ingested you can't have ingested he can't have ingested we can't have ingested you can't have ingested they can't have ingested
V-ing perfect
I can't have been ingesting you can't have been ingesting he can't have been ingesting we can't have been ingesting you can't have been ingesting they can't have been ingesting
Interrogative form
Simple form
can I ingest? can you ingest? can he ingest? can we ingest? can you ingest? can they ingest?
V-ing form
can I be ingesting? can you be ingesting? can he be ingesting? can we be ingesting? can you be ingesting? can they be ingesting?
Perfect
can I have ingested? can you have ingested? can he have ingested? can we have ingested? can you have ingested? can they have ingested?
V-ing perfect
can I have been ingesting? can you have been ingesting? can he have been ingesting? can we have been ingesting? can you have been ingesting? can they have been ingesting?
Interro-negative form
Simple form
can't I ingest? can't you ingest? can't he ingest? can't we ingest? can't you ingest? can't they ingest?
V-ing form
can't I be ingesting? can't you be ingesting? can't he be ingesting? can't we be ingesting? can't you be ingesting? can't they be ingesting?
Perfect
can't I have ingested? can't you have ingested? can't he have ingested? can't we have ingested? can't you have ingested? can't they have ingested?
V-ing perfect
can't I have been ingesting? can't you have been ingesting? can't he have been ingesting? can't we have been ingesting? can't you have been ingesting? can't they have been ingesting?