I can clinch you can clinch she can clinch we can clinch you can clinch they can clinch
V-ing form
I can be clinching you can be clinching she can be clinching we can be clinching you can be clinching they can be clinching
Perfect
I can have clinched you can have clinched she can have clinched we can have clinched you can have clinched they can have clinched
V-ing perfect
I can have been clinching you can have been clinching she can have been clinching we can have been clinching you can have been clinching they can have been clinching
Negation
Simple form
I cannot clinch you cannot clinch she cannot clinch we cannot clinch you cannot clinch they cannot clinch
V-ing form
I cannot be clinching you cannot be clinching she cannot be clinching we cannot be clinching you cannot be clinching they cannot be clinching
Perfect
I cannot have clinched you cannot have clinched she cannot have clinched we cannot have clinched you cannot have clinched they cannot have clinched
V-ing perfect
I cannot have been clinching you cannot have been clinching she cannot have been clinching we cannot have been clinching you cannot have been clinching they cannot have been clinching
Interrogative form
Simple form
can I clinch? can you clinch? can she clinch? can we clinch? can you clinch? can they clinch?
V-ing form
can I be clinching? can you be clinching? can she be clinching? can we be clinching? can you be clinching? can they be clinching?
Perfect
can I have clinched? can you have clinched? can she have clinched? can we have clinched? can you have clinched? can they have clinched?
V-ing perfect
can I have been clinching? can you have been clinching? can she have been clinching? can we have been clinching? can you have been clinching? can they have been clinching?
Interro-negative form
Simple form
can I not clinch? can you not clinch? can she not clinch? can we not clinch? can you not clinch? can they not clinch?
V-ing form
can I not be clinching? can you not be clinching? can she not be clinching? can we not be clinching? can you not be clinching? can they not be clinching?
Perfect
can I not have clinched? can you not have clinched? can she not have clinched? can we not have clinched? can you not have clinched? can they not have clinched?
V-ing perfect
can I not have been clinching? can you not have been clinching? can she not have been clinching? can we not have been clinching? can you not have been clinching? can they not have been clinching?