I can unbolt you can unbolt he can unbolt we can unbolt you can unbolt they can unbolt
V-ing form
I can be unbolting you can be unbolting he can be unbolting we can be unbolting you can be unbolting they can be unbolting
Perfect
I can have unbolted you can have unbolted he can have unbolted we can have unbolted you can have unbolted they can have unbolted
V-ing perfect
I can have been unbolting you can have been unbolting he can have been unbolting we can have been unbolting you can have been unbolting they can have been unbolting
Negation
Simple form
I cannot unbolt you cannot unbolt he cannot unbolt we cannot unbolt you cannot unbolt they cannot unbolt
V-ing form
I cannot be unbolting you cannot be unbolting he cannot be unbolting we cannot be unbolting you cannot be unbolting they cannot be unbolting
Perfect
I cannot have unbolted you cannot have unbolted he cannot have unbolted we cannot have unbolted you cannot have unbolted they cannot have unbolted
V-ing perfect
I cannot have been unbolting you cannot have been unbolting he cannot have been unbolting we cannot have been unbolting you cannot have been unbolting they cannot have been unbolting
Interrogative form
Simple form
can I unbolt? can you unbolt? can he unbolt? can we unbolt? can you unbolt? can they unbolt?
V-ing form
can I be unbolting? can you be unbolting? can he be unbolting? can we be unbolting? can you be unbolting? can they be unbolting?
Perfect
can I have unbolted? can you have unbolted? can he have unbolted? can we have unbolted? can you have unbolted? can they have unbolted?
V-ing perfect
can I have been unbolting? can you have been unbolting? can he have been unbolting? can we have been unbolting? can you have been unbolting? can they have been unbolting?
Interro-negative form
Simple form
can I not unbolt? can you not unbolt? can he not unbolt? can we not unbolt? can you not unbolt? can they not unbolt?
V-ing form
can I not be unbolting? can you not be unbolting? can he not be unbolting? can we not be unbolting? can you not be unbolting? can they not be unbolting?
Perfect
can I not have unbolted? can you not have unbolted? can he not have unbolted? can we not have unbolted? can you not have unbolted? can they not have unbolted?
V-ing perfect
can I not have been unbolting? can you not have been unbolting? can he not have been unbolting? can we not have been unbolting? can you not have been unbolting? can they not have been unbolting?