I can whipstitch you can whipstitch she can whipstitch we can whipstitch you can whipstitch they can whipstitch
V-ing form
I can be whipstitching you can be whipstitching she can be whipstitching we can be whipstitching you can be whipstitching they can be whipstitching
Perfect
I can have whipstitched you can have whipstitched she can have whipstitched we can have whipstitched you can have whipstitched they can have whipstitched
V-ing perfect
I can have been whipstitching you can have been whipstitching she can have been whipstitching we can have been whipstitching you can have been whipstitching they can have been whipstitching
Negation
Simple form
I can't whipstitch you can't whipstitch she can't whipstitch we can't whipstitch you can't whipstitch they can't whipstitch
V-ing form
I can't be whipstitching you can't be whipstitching she can't be whipstitching we can't be whipstitching you can't be whipstitching they can't be whipstitching
Perfect
I can't have whipstitched you can't have whipstitched she can't have whipstitched we can't have whipstitched you can't have whipstitched they can't have whipstitched
V-ing perfect
I can't have been whipstitching you can't have been whipstitching she can't have been whipstitching we can't have been whipstitching you can't have been whipstitching they can't have been whipstitching
Interrogative form
Simple form
can I whipstitch? can you whipstitch? can she whipstitch? can we whipstitch? can you whipstitch? can they whipstitch?
V-ing form
can I be whipstitching? can you be whipstitching? can she be whipstitching? can we be whipstitching? can you be whipstitching? can they be whipstitching?
Perfect
can I have whipstitched? can you have whipstitched? can she have whipstitched? can we have whipstitched? can you have whipstitched? can they have whipstitched?
V-ing perfect
can I have been whipstitching? can you have been whipstitching? can she have been whipstitching? can we have been whipstitching? can you have been whipstitching? can they have been whipstitching?
Interro-negative form
Simple form
can't I whipstitch? can't you whipstitch? can't she whipstitch? can't we whipstitch? can't you whipstitch? can't they whipstitch?
V-ing form
can't I be whipstitching? can't you be whipstitching? can't she be whipstitching? can't we be whipstitching? can't you be whipstitching? can't they be whipstitching?
Perfect
can't I have whipstitched? can't you have whipstitched? can't she have whipstitched? can't we have whipstitched? can't you have whipstitched? can't they have whipstitched?
V-ing perfect
can't I have been whipstitching? can't you have been whipstitching? can't she have been whipstitching? can't we have been whipstitching? can't you have been whipstitching? can't they have been whipstitching?