I can digest you can digest she can digest we can digest you can digest they can digest
V-ing form
I can be digesting you can be digesting she can be digesting we can be digesting you can be digesting they can be digesting
Perfect
I can have digested you can have digested she can have digested we can have digested you can have digested they can have digested
V-ing perfect
I can have been digesting you can have been digesting she can have been digesting we can have been digesting you can have been digesting they can have been digesting
Negation
Simple form
I can't digest you can't digest she can't digest we can't digest you can't digest they can't digest
V-ing form
I can't be digesting you can't be digesting she can't be digesting we can't be digesting you can't be digesting they can't be digesting
Perfect
I can't have digested you can't have digested she can't have digested we can't have digested you can't have digested they can't have digested
V-ing perfect
I can't have been digesting you can't have been digesting she can't have been digesting we can't have been digesting you can't have been digesting they can't have been digesting
Interrogative form
Simple form
can I digest? can you digest? can she digest? can we digest? can you digest? can they digest?
V-ing form
can I be digesting? can you be digesting? can she be digesting? can we be digesting? can you be digesting? can they be digesting?
Perfect
can I have digested? can you have digested? can she have digested? can we have digested? can you have digested? can they have digested?
V-ing perfect
can I have been digesting? can you have been digesting? can she have been digesting? can we have been digesting? can you have been digesting? can they have been digesting?
Interro-negative form
Simple form
can't I digest? can't you digest? can't she digest? can't we digest? can't you digest? can't they digest?
V-ing form
can't I be digesting? can't you be digesting? can't she be digesting? can't we be digesting? can't you be digesting? can't they be digesting?
Perfect
can't I have digested? can't you have digested? can't she have digested? can't we have digested? can't you have digested? can't they have digested?
V-ing perfect
can't I have been digesting? can't you have been digesting? can't she have been digesting? can't we have been digesting? can't you have been digesting? can't they have been digesting?