can interfile
Regular verb: interfile - interfiled- interfiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can interfile
you can interfile
she can interfile
we can interfile
you can interfile
they can interfile 	I can be interfiling
you can be interfiling
she can be interfiling
we can be interfiling
you can be interfiling
they can be interfiling	I can have interfiled
you can have interfiled
she can have interfiled
we can have interfiled
you can have interfiled
they can have interfiled	I can have been interfiling
you can have been interfiling
she can have been interfiling
we can have been interfiling
you can have been interfiling
they can have been interfiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't interfile
you can't interfile
she can't interfile
we can't interfile
you can't interfile
they can't interfile 	I can't be interfiling
you can't be interfiling
she can't be interfiling
we can't be interfiling
you can't be interfiling
they can't be interfiling	I can't have interfiled
you can't have interfiled
she can't have interfiled
we can't have interfiled
you can't have interfiled
they can't have interfiled	I can't have been interfiling
you can't have been interfiling
she can't have been interfiling
we can't have been interfiling
you can't have been interfiling
they can't have been interfiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I interfile?
can you interfile?
can she interfile?
can we interfile?
can you interfile?
can they interfile? 	can I be interfiling?
can you be interfiling?
can she be interfiling?
can we be interfiling?
can you be interfiling?
can they be interfiling? 	can I have interfiled?
can you have interfiled?
can she have interfiled?
can we have interfiled?
can you have interfiled?
can they have interfiled? 	can I have been interfiling?
can you have been interfiling?
can she have been interfiling?
can we have been interfiling?
can you have been interfiling?
can they have been interfiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I interfile?
can't you interfile?
can't she interfile?
can't we interfile?
can't you interfile?
can't they interfile? 	can't I be interfiling?
can't you be interfiling?
can't she be interfiling?
can't we be interfiling?
can't you be interfiling?
can't they be interfiling? 	can't I have interfiled?
can't you have interfiled?
can't she have interfiled?
can't we have interfiled?
can't you have interfiled?
can't they have interfiled? 	can't I have been interfiling?
can't you have been interfiling?
can't she have been interfiling?
can't we have been interfiling?
can't you have been interfiling?
can't they have been interfiling?